When, on St. Patrick's day (or night), a guy living or staying in Cambridge blows his load on his girl, preferably her face, while simultaneously flinging a handful of bright green glitter at her so it sticks to the jizz.
Yeah, we fucked for a bit, but when she asked me to turn off the Dropkick Murphys playing in the background I had to give her a Cambridge shamrock.
by TheZombiecorn August 17, 2010
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V. To shit in a cardboard box then proceed to mailing it to someone. This can be done for either revenge or for beneficial reasons. If you plan on doing more than one at a time drinking prune juice is advised.
Guy 1: Man, my math teacher gave me an F in her class.

Guy 2: You should Chris Shamrock her, bro.

Guy 1: Good Idea! Got any prune juice?
by Chris Shamrock December 28, 2019
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to receive a hand-job in the bathroom of an Irish pub, or simply a hand-job given by an Irishman
Greg "Paddy O'Flanagan gave me a shamrock shake the other day."
Steve "You're a fag"
by lonnielassar March 1, 2010
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The Shamrock Surprise is a Secret Sexual Move and Art Form currently perfected by the Immortal God Tetley of Westfall. Rumor has it that 3 ho's have already died due to the fact that one must be "Pure of Heart" to not end up getting killed by the S.S.
I herd Betty got killed while getting the Shamrock Surprise

Wow, did you see that, must have been the Shamrock Surprise

I herd that guy was a nigger
by Codename "ANDY D. ROY" March 18, 2010
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When a woman (or man) dabs a drop of green food coloring on her tongue before taking a load of cum in her mouth
Swishes it around and spits out green
See that girl, she gave me a Shamrock shake on St. pattys day last year
by Pizzadumpster March 9, 2019
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the taste when you eat out an irish girl that just peed
damn I ate out that irish bitch and she tasted like a salty shamrock
by Veronika December 5, 2007
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1) A dilapidated old farmhouse in upstate NY owned by a 30 something ski bum, man boy, who moonlights as a Bar Owner.

2) Corporate Headquarters of the Irish house of Debauchery.
When I grow up I want to work on a Shamrock Farm.
by JoeRomePark June 18, 2014
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