A tube sock that has an unopened can of Natural Ice dropped in it which can be used as a weapon. A bro sock can then be used to knock your bro out if he's about to do something stupid. It can also be used to knock some stupid ho out if she's doing something stupid.
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.