The act of dabbing with both arms, and not doing the correct forum. Both arms are bent and you will not have a straight arm, like the original dab.
Frequently called: The Whitey Sheepy Duper Dab
At the school dance, Billy got the spotlight, so he did the Double Dab.
A Double daboosy dare is similar to the triple-dog-dare, you should not / cannot back down from it, however unlike the triple-dog-dare you can be given an alternative which MUST be worse than the origional dare.
Mark: I double daboosy dare you to go to town dressed in drag
Dave: No way!
Mark: Well, your only alternative is to go to the party tonight dressed in drag and tell that girl you like that you are coming out of the closet