Sorry, I should have credited Kramer. I thought any aficionado of the show would know since I referenced salad for dinner. That episode ended with Kramer serving the gang a salad for dinner and not telling them about the washing procedure until they were all half-way thru.
As an englishman I’m finding this all very confusing. I would obviously not wear the same clothes to bed as I had worn all day. For the simple reason that I would not have worn the same clothes all day anyway. Don’t you people dress for dinner? A dinner jacket (tuxedo) if it’s at home or somewhere informal and white tie and tails if it’s somewhere more formal.
If I feel like being a slob, I might sometimes keep my dinner clothes on during the evening, but I would wear a smoking jacket over them of course.
Okay, I read as much as I could take… now I have to go take a shower.
Once when I was 13 I was home sick with the flu for a week, and since I wasn’t leaving the house I just wore my pj’s every day. Didn’t shower, didn’t bathe, just got up in the morning - sat around the house being sick - went back to bed in the evening. My mom freaked out when she realized I had no laundry that week. I realize now how fuckin’ gross that was.
But I could never sleep in my daytime clothes, that’s just weird. Maybe when I was a teenager and super drunk passed out but that’s it.
I agree with previous posters that the OP is likely suffering some form of depression. Dude you need to keep yourself and your clothes clean.
I ‘bother’ changing clothes when I go to bed, and shower in between. To be fair OP didn’t say (that I saw) you wouldn’t take off and put back on the clothes around a shower. But even assuming shower in between, sleeping in your clothes is going to make you look like…you’re sleeping in your clothes. You’d have to have pretty minimal social interaction for that to work well, IME.
But, not going to an ‘office’ every day for the same unrelated people to notice I’m wearing the same thing as yesterday, I often wear the same jeans for a few days, shirts sometimes depending the weather, and I just air out my daily use gym clothes between wearings for around a week before putting them in the laundry. That works OK, particularly with today’s ‘wicking’ athletic clothes, I find. No reuse of underpants without washing though.
At a certain point it’s just convention, not actually ‘health hazard’ to wash clothes after every wearing no matter what. People have different habits that generate ‘ewww’ or ‘neat freak’ from other people, over some range of practices. My assumption is everyday life in a developed country by people with a home and means to shower and wash clothes easily. Obviously that doesn’t apply to everyone in the world or anyone absolutely 100% of the time, but I think is a reasonable assumption for this discussion.
Um, thanks for that little nugget of info.
Interesting. BTW, give my regards to the Queen (Victoria, that is). 
lol what? You put on a tux when you eat dinner at home? Surely you jest.
What is he, a farmer? Of course he dresses for dinner.
What about English farmers?
As an Englishman I wear the same clothes all day, then put them in the laundry basket.
I don’t wear pyjamas.
The next day I put on fresh clean clothes.
P.S. I find the OP’s idea of wearing the same increasingly smelly clothes for days on end revolting.
Oversharing is frequently seen amongst the chronologically gifted, as the frontal lobes tend to get more disinhibited with age.
I’m not sure what the OP’s situation is, however.
I think he’d argue that it’s not age that has that effect on the frontal lobes but rather increased worldiness.
I once went 3 days wearing the same clothes continuously when the hubs and I did a portion of the Appalachian Trail. I will never do that again. As much as I enjoyed the hiking and the natural beauty, I couldn’t wait to get back to the hotel and shower. Even though we had baby wipes with us to freshen up a bit, with the exertion and the heat, we were pretty darn ripe at the end of our hike.
I sleep in my T-shirt and boxers.
Shirts go into the laundry basket every night. I’ll wear pants three days before it’s time to launder them. Unless I’ve spilled something on them.
Any sweaty or dirty work is done in work clothes. Usually old jeans. They get laundered after a day or two. For example, I’ll wear the same work pants on a weekend. Mowing the grass, working in the flowerbeds etc. The pants go in the laundry basket Sun night.
I shower and change my work clothes if we’re going out to dinner.
My brother does this, well a bit. He regularly wears exactly the same clothes for four days or more and often crashes asleep drunk on the floor in the same clothes overnight. Then goes to work the next day. Yuck. He was enabled in all of this by never leaving home (he’s 50) and being molly-coddled by my mother all his life. His job is in a booth in a call centre so he gets away with it I guess. He smells BAD and his room smells BAD. Parents have both died now so sooner or later it’s going to bite him back I reckon.
I sleep in Jaymees , or sleep pants and t shirt for a couple nights. Don’t want to bring "pollutants " into bed. Same reason to take your shoes off in the mud room. Even during the height of the gout attack I got dressed. Makes you feel better , I find.
The main character in The Accidental Tourist would put his laundry in the shower and stomp around on them while he showered to kill two birds with one stone.
I’ve done similar things when on vacation and traveling lite.
I remember reading an article back in 2002 about a Japanese businessman who invented underwear specifically for traveling. At the time, apparently, it was common for Japanese businessmen to travel for 6 days at a time. So, this man invented underwear with three holes arranged in a triangular shape.
(The underwear may or may not have had a flap of some kind covering each hole. I tried to find a picture, and, while I can find references to the invention, I can’t find a picture. You might say I can’t be arsed to search deeper. 
Feel free to continue the quest by searching for “japanese 6-day underwear”, which led me to references about the invention, and which would also make for an interesting band name.)
Anyway, the idea was that for the first three days, you would rotate the underwear around so you had a clean spot (in the front, I guess), and then on the 4th day, you would flip the underwear inside out and repeat the cycle.
Kind of like lather, rinse, repeat, without the, uh, lather and rinse part.