Have a look
Urban Dictionary: Irish exit
Has anyone heard the phrase "Irish exit"? I believe it is an idiom used to describe the situation where a person is out drinking alcohol with friends and then leaves without saying goodbye. Presumably the implication is that due to intoxication, they abruptly left the bar. Can anyone confirm this idiom?
I wonder why we always blame other nationalities for this sort of rudeness? Without the involvement of alcohol, here are two other idioms:
To take French leave. (English. = leave without permission)
Filer à l'anglaise. (French. = leave without saying goodbye)