A. When two men are engaging in sexual things and Male A cums onto Male B's peen. Then Male B proceeds to enter his peen into Male A's butt.

B. An animal cracker with frosting on it. :)

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.