Science Jokes

A neutron walks into a bar and asks the bartender, "How much for a drink?" then the bartender looks at him as says, "For you, no charge!"
 
I remember back when I was a kid, in chemistry class at school the teacher asked us for a 1000 word essay on Acid.

I didn't do too well as my pen turned into a gorilla and the floor melted.

It looks like you were doing okay for a while, but since then you've turned to pot.