Bacon tug
Gay men utilise a gag reflex technique while enjoying anal sex. The receiver swallows a piece of bacon on a string, the giver pulls the string on the point of ejaculation so the receiver gags and clenches their ring piece to enhance the moment or even delay the spurt. Rarely used between heterosexual couples.
Aaron was about to cum and did the bacon tug, John crimped his ring so hard it clamped down tight on Aaron's cock.