Sex

Girl #1: With the right emphasis, anything can sound dirty.
Girl #2: I'll jump on your trampoline.
Girl #1: I'll park in your car park.
Girl #2: I'll reverse up your back alley.
(pause)
Girl #2: I think it just got too literal.
Girl #1: Me too.

Sydney
Australia

Drunk young girl: Whatever. She could have had sex whenever she wanted.
Drunk mother: Well, she's beat you by a few years!
Drunk grandmother: I haven't had sex in such a long time.

The Keg
Vancouver
Canadia

Giggly blonde teen: Ew, you know bestiality is illegal, right?
Giggly brunette teen: It wasn't bestiality!
Giggly blonde teen: And yet you know that your cat is good in bed?

Ontario
Canadia

Drunk tailgater dude: Remember when you paid for that girl I fell in love with?

The Rose Bowl
Pasadena, California

Overheard by: Chad

Female to male coworker: Stop trying to fit me into things!

http://eavesdropdc.blogspot.com/2008/04/square-peg-says-what-to-round-hole.html

Overheard by: tla

Professor: I don't even turn on the television anymore. It's just violence. It's all rape, and gore, and homosexual pedophiles in wheelchairs who chop up grandmothers.

http://www.overheardatmcgill.com/archives/2008/04/01/wasnt-that-the-season-finale-of-what-not-to-wear/

Overheard by: philosopher

Girl to friend: And he tried to order frozen yogurt, so I didn't sleep with him. If you want to bang me, you have to eat full-fat ice cream!

Pittsburgh, Pennsylvania

Girl in class: Dan, can you spread me out? (pause) Oh, that sounded wrong.

University of Northern Colorado

Economics professor, discussing equilibrium in trade curves: When you reach that point, the climax, everyone can go home satisfied and exhausted. So as you can imagine, we're going to fool around with these curves quite a bit.

http://eavesdropdc.blogspot.com/2008/04/american-university-where-you-can-get.html

Overheard by: au

Drunk girl to guy she just met: I'm not having sex with you!
Drunk guy: That's okay, I'm on my period.

Montreal
Quebec
Canadia