look up any word, like sweetest day:
 
1.
clear the way or get out of the way.
by Mr. Terrence L. Trezvant October 12, 2003
 
2.
A way of telling someone to back up, or move.
Whoa! Back back! Gimmie 50ft!
by abstrak8 March 14, 2005
 
3.
A very versatile word, used to describe any number of sexual acts.

1. Sex without a condom.
2. Sex between 2 men.
3. Random gibberish, implying sexual acts.
1. May as well go backback from now on!
2. Do you want to backpack to Brokeback and maybe backback?
3. backbackbackbackbackbackback
by inspectr88 May 22, 2008