Michael Karnjanaprakorn

I didn’t make this word up but I do do this all the time

Irish Goodbye
Leaving the bar or anywhere for that matter, without closing niceties, like a kiss goodbye to that annoying girl or mentioning something to your friends

The term refers to the practice of inconspicuously leaving a place where one has gathered with friends (usually for quite some time) without ever formally announcing that one is leaving. Note that an Irish goodbye requires a conscious decision by the person to leave without bidding adieu. It is a decision undertaken not for any emotional reasons, but solely as a matter of convenience. The Irish goodbye allows a person to disappear from a function with the utmost expediency without spending extra time on “thank-yous” etc.