To purposely become intoxicated and either pass out or sleep on a floor/bed/sofa/animal/member of the opposite sex at an appropriate social event.
"Mark, are you smashing and crashing at that partay tomorrow?"
"Aye, I am pulling a 'smash and crash' tomorrow Alex"
"Aye, I am pulling a 'smash and crash' tomorrow Alex"
by alexbericheath August 08, 2008