Poop

If you knew me in high school, you would know that 99.9% of the jokes I made between the ages of 14 and 17 were related to poop. Since then, it has gone down to a meager 73.8%. Clearly, today's anatomy lab was absurdly hilarious to me at all times. Okay, sure, so I didn't particularly LOVE poking around the digestive organs in the body, but it did make for some pretty good laughs.

Dr. Ferguson: So she's had her appendix taken out, but if you feel right here, that's where the appendix stump usually--oh, wait, no, that's just feces.

Dr. Ferguson: I'm just going to slice this part away.
George: But you're using the scalpel so close to the colon!
Dr. Ferguson: But you can trust me. I'm a surgeon.
George: Okay.

Note: This is the first time I've actually heard someone use the phrase, "Trust me, I'm a doctor." And it worked!