Science

Biology teacher: Can anyone give me an example of a parasite?
Girl: A baby!

Madison, Wisconsin

Overheard by: Tangent

Ten-year-old girl walking on cut down tree: Oh, I bet this is what they make wood out of!

Cambridge
Ontario
Canadia

American tourist to girlfriend: No, it's a special species of blue rabbit that can survive in space.
Girlfriend: Wow!

Kaaba Cafe
Prague
Czech Republic

Biology teacher to uninterested students: Sperm doesn't just crawl along the floor.

Maine

Husband, reading aloud from newspaper: Honey, did you know that women use an average of 30,000 words a day, while men only use 15,000?
Wife: That's probably because we have repeat everything to men.
Husband: What?

Australia

Overheard by: Mikyla

Host to dumb tourist: Would you like to sit inside or in the garden?
Dumb tourist: What's the weather like in the garden?
Host: I'm going to guess that it's the same as outside the front door you just walked through.

Restaurant
Charleston, South Carolina

Overheard by: Crash

Professor: Here's a good thing to compare to the turgor pressure in a plant cell: have any of you seen an erection?

University of Illinois at Chicago

Overheard by: suddenly paying attention

Economics graduate to friend, looking around sadly at subdued crowd: We should go to the poli sci graduation later. I heard it's riotous.

UCLA
Los Angeles, California

Overheard by: Another Economics Graduate

Nerd #1 to another: How do you write “dd” in hexadecimal again? I forget…
(they turn to look at fat woman walking by)
Nerd #2: I would not write a dissertation on her boobs. No way.

PATH Train
Hoboken, New Jersey

Overheard by: I wouldn't either

Asian girl #1, looking at yogurt display: Ten for seven dollars, what is that?
Asian girl #2: I don't know, I don't want to do the math.

Los Angeles, California