presexturbation 

Masturbating before going on a date so as to be able to last longer when having sex with your date later in the evening.

My girlfriend is super-hot, so I always jack off before we go out. Presexturbation lets me last longer with her later on.

presexturbation by Dr. Robstew November 16, 2012

presturbation 

Presturbation is the act of watching porn to get you horny enough to watch the really awful porn you need to get off because you're dead inside.

The term originates from Michael Swaim of Cracked.com

Guy 1: My girlfriend walked in on me watching porn the other day. Luckily I was just presturbating so it wasn't anything too nasty. A few minutes later and she would have seen my collection of loli midget amputee vore hentai. Presturbation saved my relationship.

Guy 2: You're dead inside, aren't you?

Guy 1: Oh, most definitely.

presturbation by That name is already taken September 2, 2011