Fap Guilt
The feeling of depression after masturbating to a certain person (e.g. a hot friend, celebrity idol, etc.). Can also apply to females.
I got fap guilt after wanking to my friend's sister.
PFG (Post-Fap Guilt)
The guilt and/or depression felt after masturbation due to the material used, the method used, etc.
Man, fuck PFG (Post-Fap Guilt).