a. After narcotising someone with Rohypnol AND Viagra, then climbing on and having your wicked way with them/yourself, entirely without your victim/abusers knowledge, you can claim to have performed a Reversy Percy, a feat of such moral paradox and logistical difficulty that it is topped only by a Hitler Youth DVDA.
b. Bag of sweets sold by popular British high street retailer, Marks and Spencers.
He Let me Reversy Percy Him.
We tried a reversal 69