A bunch, but implying that the bunch was conducted under negative circumstances.

When u are blingin' in ur VW Golf GTi (very,very average), u play music dat sounds like bumche beat.

1. An article of apparel that has become unsightly due to having gotten in the way of a guitra starp.
2. A shrit that has the state of being bumched.
3. An ongoing meh-meh on TDPRI that has reached legendary status due to its association with elevator riding bodybuilders, and oddly obscure tools no one can name.