Whenever someone motorboats a drunken man's penis.
I can't believe that hot chick gave Dave an Irish party favor last night.
by welfarewarrior December 31, 2011
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When you are the last person concious at a drinking party, and you go around tea bagging everyone at the party.
ewww.... there is a ball hair in my mouth, there must have been an Irish Tea Party last night.
by Johnny Schaffer August 6, 2006
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The Irish tea-party is a sexual act where a male shoves minty mentos in a condom until it is full and preceeds to shove it into a woman's asshole and pour diet Pepsi into the condom, which causes her asshole to explode in a
furious rage.
Johnny: Dude, yesterday I gave Jennifer an irish tea-party...

Mark: No way, Does her butthole still work?

Johnny:Nah bro, that shit got fucked up
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A party like event (similar to parties thrown by an Irish host) which last to the wee hours in the morning. You usually continue your day as if you just woke up early.
"I'm going to an Irish party tonight, I will be really tired tomorrow morning!"
by Sean McCouste October 17, 2019
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