BEFORE you go all "oooooooooooo she said bitch and cock!" here are the SCIENTIFIC definitions of both of those words, those being the definitions used here:
bitch - noun. a female of the canine variety.
cock - noun. a male of the avian variety.

Now, why that title? It's the conversation my AP bio teacher from this year, my Honors bio teacher from last year, and the funniest bio teacher whom I have never had. They shall be annotated as Thadani (AP bio), Kelly (Honors bio), and Padilla (funny bio), or T, K, and P, if I get too lazy.

Padilla: -comes into the room and looks at all of us, then goes to the back of the room, to the lab area, grinning- Did Mrs. Thadani tell you her story about her bitches and cocks? -comes back to the front- One of her bitches got out and ate her cock.
Thadani: Hey, that never happened! I don't have any cocks, but I do have a bitch!
Kelly: -comes in from the attached science office- I have two cocks!
Principal of the School: -comes in just at that moment, looks at the three teachers like they're crazy, and proceeds into the science office-
Thadani: -pulls out the plastic penis she keeps in her desk drawer*- Yeah, but I have a penis!
Class: -laughing our asses off-

*A note about the plastic penis: The teacher who taught in the AP bio classroom before Mrs. Thadani had an anatomically correct model of the male body, complete with genitalia, and when he was moving out of the room, the penis fell off, and Mrs. Thadani found it on the floor and now keeps it in her desk drawer for some odd reason.

That convo was actually much longer than this, I just shortened it for brevity. It took up about ten minutes, and all you could hear (all we could hear) was "bitch blah blah cock bitch blah bitches eat cocks blah blah blah" in the context of female dogs and male birds. It was...amusing, to say the least.