memory wank 

the art of remembering an arousing occurrence or some porn you watched while masturbating, often handy if you have no porn or your in the shower

dude i had the best memory wank the other night, i was thinking about that time I walked in on your mum in the shower

memory wank by fonzatron2000 May 9, 2007

Memory Wanking 

When you're horny as fuck and you don't have time to pull up any porn, so you just have to remember some porn you once watched

Beau: 'You took a while in there.'
Lachlan: 'Yeah I was memory wanking!'
Beau: 'Fuckin legend'

Memory Wanking by Your Local Perth Guide July 19, 2021