wicked yank

a wicked yank is when you ain't jerked off in a while and your roommates are gone so you light a candle and take a trip to wonderland, just you and your shmeat having a little yank together

"yank" is an abbreviation of "yankin tha shi," a euphemism for jerking off
"wicked" refers both to the sinful nature of the activity, and the fiendish gusto with which it is carried out

"hey man how was your weekend"
"pretty good! i had a WICKED yank on saturday and then i hit the gym"
"haha cool"