How do you make a tissue dance?

Q: How do you make a tissue dance?
A: Put a little boggie in it.

The humor in this joke is bathroom humor. The joke also relies on a pun to make it even make any sense (because making a tissue dance doesn't happen just by blowing your nose). The pun (for those readers that did not understand it) is the word boogie. Boogie is slang for dried nasal mucous, as well as to dance to fast music.