The act of swiping a credit, debit, ID, Library, Social Security, Novelty birthday card between someones bum cheeks or crack. The swiper (or MotherSwiper) then proceeds to smell the shitty side of the card and asks the swipeé if he or she would like a receipt.
Originates on the small Island Utopia of Guernsey. It is believed by most historians that the first person to ever recieve the pooey transaction was Joseph Robert Cowens, as resident of Guernsey (Shortly after dipping his love nuts in a fish tank)
"I am the Mother Swiper! You have recieved the pooey transaction!"
"That'll be £6 please"
"Do you take the pooey transaction?"
"Oh yes we do (Bends over then swipes)"