P.C.S.R.P.
When a guy finishes having sex or watching porn and suddenly feels like he's the worst person ever for either A. Being a cum-covered mess on/in his partner, or B. Making a total fool of himself after getting off to a movie.
'I feel like I just got dumped by my cum.'
'He texted me and said, 'I'm a total failure.' after the third cumshot.'
He took a shower, cried, and said, 'I'm a total disaster.'