Okay, I’ll start. This is not the least bit reasonable and I have no idea why I find it mildly annoying, but the new trendy way of wearing scarves bugs me a bit.
The slimming scarf - YLF (the girl on the far right in the blue scarf)
The way it’s worn is, the scarf is folded in half and then the ends go through the loop created by the fold.
So what’s your “I have no idea why this bugs me, but it does”?
I wear it like that when I am wearing a scarf to actually be warm not just cute. The doubling of the scarf allows more scarf to be around the neck and putting the scarf through the loop makes it stay in place. I wear pea coats which have a V-neck thing going on and wearing the scarf that way does a good job of keeping my neck warm. My cousin taught me that way of wearing a scarf a few years ago when we were in college and had to walk far in the cold daily.
A lot of things bug me for dumb reasons or no reason. But right now I can’t think of one cause I’m currently very un-bugged.
It’s called a “European Loop”. It doesn’t bother me. It’s easier to tie and untie than a Square Knot and doesn’t look as fruity as an Ascot Knot
But its slimming!
but…but You’re all 'sposed to be posting your silly little annoyances too!
Yes, I know it’s an unreasonable thing to be annoyed about. And again, it’s a mild one, if I weren’t so lazy, I’d research a thesaurus and find a better word. 
Ok, this bugs me: People who fold over the back of their shoes and walk on them that way. You know. sort of making them into slip-ons. I know someone who does this with mocasins. It looks painful. It’s no skin off my teeth, but it bugs me.
Yep. If you’re wearing a scarf for warmth and practicality, rather than fashion, looping it is the way to go. I’ve seen knitting patterns for keyhole scarves, in which there is a hole near one end of scarf for threading the other end or ends through.
The way that first scarf is worn bugs me - I don’t want to see bare skin anywhere on your neck or chest when you’re wearing a big, heavy scarf. If you need a big, heavy scarf, you need to keep your neck and chest warm. If you don’t need to keep your neck and chest warm, you don’t need a big, heavy scarf.
I also don’t like it when my husband starts my car off in third and quickly has to shift down because he forgot to put it in first when he stopped at the light. It drives me just a little buggy for no real reason. 
I find myself irritated by seemingly healthy people who wander into stores in their PJs at mid-afternoon or later. It’s totally irrational that it bothers me, even if they are the lazy sobs I take them for, but it does.
Personally, what I find irritating is the idea that wearing one piece of clothing will “slim” you. Yes, some clothes (print, color, shape) will look better on some people than others due to calling attention to or from certain features, or to optical effects. But have you noticed how the pictures touting “slimming” clothes never feature someone who’s fat?
People bug me the most, followed by animals and then plants.
Restaurant servers wondering if I am done “working on that” when what I am doing is eating my food top my irritating people list, followed by folks who cannot grasp the difference between “I am sorry” and “No problem”:
"Would you please tell me where the GFCI switches are?"
“We’re out. Forgot to order them, I guess.”
"Thank you."
“No problem.”
I think Isadora_Duncan would have been bothered by this scarf, too.
How is this new?
Sounds like you cannot grasp the difference between “thank you” and “thanks for nothing jackass”.
I’m going to go with people (well, ok, women) who tie their sweatshirts/jackets around their waist.
(note: before I corrected myself, I had typed ‘waste’ instead of ‘waist’. :D)
I thought the thread would be another recurrence of a thread about the thread response “This”.
I was looking forward to a rant about the confusion between “this” and “next” (or in the past tense, “this” and “last”).
This. 
Okay, now I’ve just bugged myself by being the doofus who makes the predictable and totally unfunny joke. But it really does bug me.
For no good reason it really bugs me when people back into parking spaces. I don’t just mean having to watch and wait while they do it, I mean just seeing a car that has been backed in makes me think bad things.
Well, that bugs me because the ‘slimming scarf’ in the OP is not even remotely friggin’ slimming. Large accessories may generally be slimming, but not when they turn your neck and torso into one vast field of solid colour with no boobs or waist.
Ok, after looking again it’s not as bad as I thought, but that was still my first impression, which means it failed at the intended look.
Could be my negro blood talking, but that blue one looks a bit lynch-y to me.