When you sneak your own booze into a bar, so you don't (or can't) pay for drinks, but can still drink and participate (intoxicated obviously) in all manner of bar antics.
I couldn't afford the expensive drinks at the fancybar, but all my friends were going. So I decided to pull a sneak easy , and got wasted for about ten bucks!
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.