What do Scientists have for snacks? Micro-chips.

One day a medical professor and his class were standing over a corpse and the professor said, "There are two things to being a medical forensicist. First: Don't fear anything." After saying that, the professor shoved his middle finger up the corpse's anus and licked it. He then told the class to do the same. After hesitating, they all did it. "Next," the professor said, "you have to have a key observation finger. Thus, I licked my index finger."

Chuck Norris can split the atom. With his bare hands.

I would make a science joke but all the good ones ARGON.

An engineer and a physicist are in a hot-air balloon. After a few hours they lose track of where they are and descend to get directions. They yell to a jogger, "Hey, can you tell us where we're at?" After a few moments the jogger responds, "You're in a hot-air balloon." The engineer says, "You must be a mathematician." The jogger, shocked, responds, "yeah, how did you know I was a mathematician?" "Because, it took you far too long to come up with your answer, it was 100% correct, and it was completely useless."