Progrets (noun): Regrettable behavior that was actually COMPLETELY worthwhile
Bob: I'm starting to have progrets about that 5-day adventure in the Caribbean with that blonde...it cost me my job, my family, my house, my dog, and even my lawnmower.
Steve: Dude, I saw that blonde. It was worth it.
Bob: Hence the "progret," Steve. I really just wanted to bring it up again.