1) A musical track that plays at such an incredible volume or contains great enough bass that the listener's cranial region is shattered and/or pulverized whilst blood,
grey matter, and other assorted materials gush out of every
fissure created by the initial shockwave.
2) A combat maneuver that effectively replicates the
aftereffects of the first definition.
3) A very fucking painful and forceful blowjob.
1) As soon as Jimmy started playing that
heavy-ass skull crusher shit through his airplane headphones his brains fucking spewed all over my goddamn shirt, so now I have to go out to Wal-Mart and buy a brand new one. But I think
I'll keep the old one as a
memento.
2) Dude I though Brad was going to kick Jack's ass when that kid pulled off a skull crusher and splattered Brad's face all over the pavement, Jesus!
3) I gave my girlfriend a skull crusher last night, so she took off school today because she had a sore throat.