Two chemists go into a restaurant. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" - and he died.

 853

0  

Two kittens on a sloped roof. Wchich one slides off first? The one with the lowest mew.

 1006

0  

Schrödinger's cat walks into a bar and doesn't.

 769

0  

Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number!

 1961

5  

Q: Why do accountants make good lovers? A: They're great with figures.

 2629

4