Two hydrogen atoms walk into a bar. One says, 'I think I've lost an electron.' The other says 'Are you sure?' The first says, 'Yes, I'm positive.'

hehe... nice

Very good, i will tell it to my friends who have an atom of intellegence.

Haha, I understand it of course but it's not allll that funny. Maybe I need a better sense of humor.

my chemistry teacher used to make jokes like that. Once he made a christmass tree out of metal stands and beakers with liquids of different colors and called it his "Chemistree, hahha get it? " which i found was rather lame but anyway.

lol. def what are you talking about thats almost cute:P awesome joke

coming from a 65 year old man? I dont think so, it was really scary for some of us...ah..scientists. i dun like their jokes.

Puns can sometimes be funny but this is very rare.

Simple, yet has some humor to it.

i dont get the joke, or either i get it but its not funny