A good joke is like snootful of cocaine

http://www.nature.com/nsu/031201/031201-5.html

And a bad joke is like… ?

a snootful of crushed Smarties, I’d bet…

I’d rather have the cocaine.

“It’s important for Americans to know that trafficking of drollness and jockularity finances the world of terror, sustaining terrorists; if you quit being witty, you join the fight against terrorism.” - Bush