You're bangin' your chick doggy style and just before dumping your load, you pull out and jam an umbrella in her ass and while reciting today's weather forecast you drop a clump of MAN-aisse on her back.
Joey was hitting Linda from behind when he decided to give her a slickreuben. It's a good thing his umbrella was ready.
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.