SXSW in Austin is full of great music, good times and, of course, plenty of alcohol. But with alcohol (especially in downtown Austin) comes drunken stupidity. Such is this example:

A dude, obviously not sober, keeps messing with a couple of guys until he finally sucker punches one.

Then, here comes the BOOM.

My favorite part of the whole video is after the dude gets knocked out, everyone rushes to take a picture of him on the ground.