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.
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.