Slank Off 

To do whatever you want and not do some other stupid stuff instead.

Marcel: "Hey bobby, you doing your homework?"

Bobby: "No, F that! I am going to slank off!"

Slank Off by Chip&Pepper March 27, 2009

slack off 

to waste time

Slacking off at this time, when there's so much to do? (to slack off)

slack off by anything more November 28, 2011

good night spank off 

using sexual gratifaction (masturbating) as a way to relieve stress or anxiousness so as to go to sleep.

Man, I was freaking out about that test last night, but then I had a good night spank off and got right to sleep.

good night spank off by MyManEd January 15, 2009

Spank Off 

v. To masterbate; wank

i like to vigorously spank off.

Spank Off by jim jimson November 27, 2002

Skank-off 

To bitch about people (mostly girls) crap choice in clothing. Usually cheap and of rubbish quality. The person can wear it once maybe twice, if that. skank, slut clothes bitching skanky

'Omg did u see that girls outfit last night..?'
'Yeah me and Ellen had a bitch about it'
'Oh so you had a skank-off too?'

Skank-off by Abi <3 December 6, 2006

Skank-off 

To be present in a nightclub with one or more female friends, potentially on drugs, and try to attract more attention than them by kissing and grinding members of the same or opposite sex, making irritating noises (possibly attempts at conversation) and wearing as little as possible without being charged with indecency.

The D-floor at Sugar last Saturday, major skank-off!

Skank-off by Spice6987 January 20, 2011

slack off 

To masturbate, jack off, stroke your penis, fap, beat your wiener, play with yourself,

My penis was a boner so I slacked off.
slack off.

slack off by Minecraft1238 February 7, 2019