The performing of fellatio whilst stroking the area between a mansballs and his asshole. Believed to be derived from the term Gobble: perform fellatio and Gooch.
Not to be confused with the term Gobbledygook
I asked her for a Gobbledygooch.
She gave me a good Gobbledygooching.
That's about as slick as a gobbledygooch. (to indicate something is particularly pleasing).
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.