Puns

There was a man who entered a local paper's pun contest. He sent in ten different puns, in the hope that at least one would win. Unfortunately, no pun in ten did.

Two molecules are walking down the street when one suddenly stops and exlaims, "I've lost an electron!"

The other asks, "Are you sure?"

The first replies, "Yes, I'm positive."

Tibetian housewife upon entering her smoke-filled kitchen: "Oh, my baking yak!"

Now you know why the bun is the lowest form of bread.