Desiigner's "Panda" is currently the No. 2 song in the country. It's a song that took him a year and a half to make, and one that he's proud of. When performing his breakout hit, the 19-year-old can be seen sweating, screaming, dabbing maniacally, and, as of last weekend, puking. Inspired by Desiigner's incredible boot 'n rally (see below), we wanted to round up a list of some particularly shocking moments of on-stage behavior. Physical altercations are sometimes par for the course at hip-hop shows -- we made an entire list dedicated to the times Action Bronson has wrecked unruly stage-rushing fans -- but these moments are of a more unpredictable variety, ranging from the bizarre to the obscene. For your own safety, we decided not to include the time Stitches hosted a twerk-off that quickly devolved into a booty eating contest.