If This Dumpster's A' Rockin'

From TheKolWiki

If This Dumpster's A' Rockin'

You make your way to the far end of the Heap, but stop when you hear your clanmate <name> locked in what sounds like a mortal struggle with something inside a dumpster. Yes, it's a very, very specific sound.

Occurs at The Heap if another clanmate is already fighting Oscus.