When one has two pussies stacked one atop the other, for easy alternating insertion. Usually done doggystyle, this position is used mostly in FFM (female-female-male) porn.
Did you see Ava Devine and Alica Saint in that new Peter North flick? He stacked their asses up into double decker pussies and fucked them both, man!
Young finnish teenager girl or boy. Use much time and money to keep her(him)self looking cool. Uses character "z" instead "s" drinks lot of sweet cider. Wear too tight trouser which leave hips visible