A flashbang wank is when an individual decides to masturbate or engage in sexual intercourse whilst tackling a throbbing headache before the event. The word ‘flashbang’ comes from the sheer brain fuckery that is experienced after ejaculation. The pain is so awful that you don’t even have time to clean up the bodily fluids due to having a strong urge to hold your head against a pillow to calm the pain.
I had a flashbang wank earlier babe, and it was the most unsatisfactory wank i have ever fucking had. However, it wont stop me from flashbang fucking the shit out of you later.
by Cum shoot January 20, 2021

To quickly check Wikipedia in order to try to win an argument (over the internet usually). Unintelligent people generally do this to make themselves look smarter than what they are.
by Sauce Baus October 25, 2011

by jackametii1234 February 22, 2010

by ThatPurple July 29, 2017

by Midge05 October 3, 2021

When you can't be arsed to use the sink and you roll to the edge of the bed and bash your meat till you dribble man porridge on the floor.
by Tone Leigh January 13, 2023

by TRIGGBLOKE June 4, 2021
