A.P.P.S.
The extremely inconspicuous acronym for Anal Penetration Protection System(s). A.P.P.S. refers to the common system used for preventing anal penetration, most commonly via the use of a common household butt plug.
Jimmy: "Hey Tim I heard your new A.P.P.S. came in today!"
Tim:"Sure did! Went all out and got one with a fidget spinner."