Caledonian sleeper

[Michiko]

At a Scottish wedding when a drunk [Groomsman] targets a passed out/sleeping guest at the reception (after party). The aforementioned lifts his kilt and proceeds to put his flacid penis in the unsuspecting sleeping victims mouth. Once fully inserted the Groomsman then motions as though he is activating the pullchord of a [locomotive] and yells [Choo Choo]. All aboard!