An
Irish Bang is to have sexual intercourse without the use of contraception, with the knowledge that there's is still a risk of pregnancy.
It's original name was the "Catholic bang" but it became known as the "
Irish bang" due to the
English stereotype of all Irish citizens being catholic so the word catholic became Irish.
It is usually used in a way that suggests someone is good looking, or worth having sexual intercourse with in the same way "I would do that" would be used, but in a more extreme way.
Ed: Corr, look at that babe over there!
Dave: Yes mate, I would
irish bang that and take all the risks.
Ed: Dude, you'
re not even catholic?
Dave: yeah, that's how
fit she is!