A nasty wank is one in which the man is sneakily pleasuring himself, perhaps in a public toilet, in the car, or in a friends bedroom while they are out. The sneaky wank works well until it goes wrong, either because the man has not provided enough space to come, or is not prepared for it when it happens.
The result is usually a very wet t-shirt or other item of clothing, which will be embarrassingly obvious. The sneaky wank can also be preformed lying down, and may result in come running down the leg and becoming entwined in hair. This is almost impossible to clean up, especially in a hurry. The situation is exacerbated if a friend or relative is about to walk in or actually does.
Can lead to embarrassing situations for all involved.
The result is usually a very wet t-shirt or other item of clothing, which will be embarrassingly obvious. The sneaky wank can also be preformed lying down, and may result in come running down the leg and becoming entwined in hair. This is almost impossible to clean up, especially in a hurry. The situation is exacerbated if a friend or relative is about to walk in or actually does.
Can lead to embarrassing situations for all involved.
Person 1: Why is there wet all over you and my bed? Were you having a nasty wank?
Person 2: Eh...no...though I would appreciate if you left the room again.
Person 1: You're sick.
Person 2: Eh...no...though I would appreciate if you left the room again.
Person 1: You're sick.
by NobJockey69 January 23, 2012
Get the Nasty Wankmug. When you're having a wank, just before blowing the load, shout out "Mom" or "Dad", then try and finish the job before they get into your room!
by darwin (herolevi) November 19, 2019
Get the Suicide Wankmug. 
by craig January 26, 2005
Get the Tit-Wankmug. by Joey February 15, 2005
Get the WANK LOADSmug. A girl so tasty that thinking about her is sufficient motivation when you tickle the pickle, without having to resort to porn.
by Nerdalotapus February 13, 2015
Get the wank hotmug. When you lie on your side and have a cheeky wank, always with your back against the door, so if people walk in you can give them an over shoulder sketchy go away look
by parmjitandthekids April 25, 2011
Get the Side Wankmug.