(1) playing a record backwards, then believing that it's telling you to commit crimal acts. -forms: to backmask; backmasking.-
(2) a record that CAN be played backwords, and delivers a message, whether it be good or bad. -forms: backmask; backmasks.-
-Whatcha doin' man?
-Sheet, man, I'm backmaskin'.
-Keep that backmask flowin'!