P.M.H.P.
P. M. H. P. means you’re so horny you forget you’re already married. It’s like a cheat slip but with more sweat and less dignity.
My dad got called P. M. H. P. because he was with his coworker at the bar.
My uncle’s wife said he was P. M. H. P. because he was messaging his mistress during work.
My friend’s mom called her dad P. M. H. P. because he was with his boss’s wife.