Stupidity

Guy: Are they gay?
Friend: Yes, they're holding hands and wearing the same clothing.
(15 seconds later)
Guy: Are they gay?
Girl: That's a family.

Hillcrest, California

30-something large man: That book by George Orwell, 1984, is a prophecy!
Skinny guy sitting next to him: Yeah, yeah, man.
30-something large man: Because in 1985, the government took over, and they were the ones selling all the crack and dope. I would know. I was working for them.

Transit Bus
Olympia, Washington

Overheard by: scooting farther away

Dude: Buenos Aires, eh?
Bimbette wearing Buenos Aires t-shirt: I gotta represent for my Puerto Ricans!

Summit Park Clubhouse
Philadelphia, Pennsylvania

Overheard by: rock.star.

Gray-haired lady: It smells like tacos in here.
Older blue-haired lady, gesturing toward Latino family several feet away: I think it's those people over there.

Metropolitan Airport
Detroit, Michigan

Man to friend, very seriously: Now, when you shower, do you stand up?

http://www.overheardinminneapolis.com/2007/08/i_dont_know_have_i_been_drinki.html

Overheard by: I prefer the fetal position

Blonde: Um, no, actually, a penguin is a mammal. I learned that from Morgan Freeman.

Halifax
Canadia

Girl #1: No, dude, I never knew New Jersey was in New York!
Girl #2: Yeah… I didn't even know New Jersey was a city!

http://www.overheardatmcgill.com/archives/2007/04/03/which-is-in-new-england-no-thats-all-wrong-im-certain-we-must-have-been-changed-for-new-rez-girls/

Overheard by: Ian

Super gangster teen guy, looking at Victorian book: Yo, why there so many pictures from Greece and Rome?
Super gangster teen girl: Greek is in Rome!

Bedford
Nova Scotia
Canadia

Overheard by: Heather

Cashier: Our credit card machine is down right now. Will that be cash or credit?
Customer: Gee, I guess cash… then.

Fast Food Restaurant
Fort Lauderdale, Florida

Overheard by: Kate

20-something chick, gravely: I'm having severe intrusive thoughts about buying a medium popcorn.
Friend: So go buy a popcorn.
20-something chick, gravely: No, you don't get it. I'm serious.

Vancouver
Canadia