whip the cream 

When a gentleman deposits his ejaculate into his lucky partner's splatterbox, he then withdraw's and treats the lucky recipient to a spot of fingerblasting. The rapid mixing of semen and air during this post-coitus treat, churns the substance into a white froth. Thereby whipping the cream.

She'd been a rather good girlfriend lately so I thought I'd give her a treat once I finished. I decided to bring her to orgasm by using my fingers to whip the cream.

whip the cream by The Iron Weasel December 6, 2015

Empting the whip cream can 

masterbating,jacking off

Kyle was "empting the whip cream can" because he was horny and his girlfriend was at school.

Empting the whip cream can by Panasonic Wolf May 30, 2016