The often heardavalanche of faecal matter erupting from someone's bowels in a public bathroom...
A: "Dude i was just in the bathroom and the place shook with a damn brownavalanche!"
B: "Sick!"
C Walks in with a pleased grin on his face.
A: "Feeling relieved?"
C: "Oh yeah."
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.