Since the rest of the definitions are outdated and from a couple of years ago I will explain what a dab is. A dab is a dance move. Typically used by 10 to 21 year olds, the "dab" is a dance move where the dancer drops his head into the crevice, which happens to be their inner elbow, while simultaneously raising the arm that they have dropped their head onto, and raising the other arm in the other direction. A simple google search will help.
by Spam Blocker 2000 June 14, 2016

by Da Quan Mc Miller May 17, 2016

by Purgully December 14, 2011

by ZM54 June 24, 2016

A way to sneeze by sneezing the regular way but sticking your other arm in a angle like a slash ( / )
by Pandapopprincess February 14, 2017

A specific dance in which a person tucks their head in their left or right arms as if they are sneezing.
by Jonthetti August 8, 2016
