When a guy is throwing up and receiving a hand job from a girl at the same time.
"Hey man, you just puked all over the car and that ho gave you a irish handshake"
by Toan To April 5, 2006
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An Irish Handshake is a sexy ass spanking by an Irish (sometimes Scottish) man just before sex.
Meir gave me a very memorable Irish Handshake before fucking me all night long; my ass was still pink in the morning.
by CyAdora October 27, 2011
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Putting your unwashed fingers into a friend's beer when they are not looking. Especially after coming from the toilet.
You remember the time I gave Seamus a good ol' Irish handshake in the pub?
by theseamus July 23, 2018
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