1) Any music played at a club or party that make the crowd go crazy with excitement
2) Beats that make even the most wore out person get jacked
3) Songs with bass hits that make your chest rattle
Definitions come from random explanations of various parties and clubs people come from where the music causes temporary deafness. Also can be from dance parties where the dancing is so crazy you practically have to use protection to prevent pregnancy.
Dude, we went to this club last night and the DJ was playin some crunchy beats.