When a girl is sucking your peen and your about to jizz so you take your dick out of her mouth and yell, “Flashbang!!” As you jizz in her eyes, blinding her.
I gavethat bitch a flashbang on my bed then broke up with her the next day.
The flashbang is when you go down on someone after eating some spicy food and it sets her/his va-jj/cock on fire. This is sometimes done by accident after drunken encounter at Buffalo Wild Wings but can also be done intentionally by filling your mouth with hotsauce if your eating a dick/pussy you don't want to eat again.