Rather than bump an 8 year old thread, I thought I’d just start a new one.
I love detail of the flying saucer on the pillow! 
I liked Elaine’s Ziggy-ish New Yorker cartoon on Seinfeld, but with Kramer’s caption:
A pig is talking to the clerk at a COMPLAINTS window and says
“My wife is a slut.”
No matter how many times I see that, I can’t help but laugh! 
This one always gets a guffaw out of me (from The New Yorker)
This has always been a favorite of mine:
My fave:
Hm, is there any significance to the fact that four of the six entries so far are about dogs?
Oh. My. God. That is hilarious!
All good entries so far. 
Yes yes, I miss you too honey. Now put the dog on.
This one is especially hilarious to me because I actually overheard a coworker once tell his wife to put his dog on the phone.
I used to do this, back in the day when I had a dog.
It was funny to hear her reaction, usually a disgruntled snort.
I talked to her once on Skype before she died. The “W-T-F???” look on her face was priceless!.
The disturbing thing about that panel is that I can’t tell if the cowboy is a mere observer or an overseer.
I love the joke, but I swear I remember the deer and antelope working in a factory. But I couldn’t find the cartoon.
It’s entirely possible that two different cartoonists independently hit on the same basic premise.