The Shamrock Shakes

The term used to define the diarrhea after eating McDonald's.

Person 1:Dude you wanna go to McDonald's before we go to the party?
Person 2:I dunno man, i dont wanna get the shamrock shakes at the party.

by Alund0 January 17, 2010

Shamrock Shake

The best possible item ever placed on the Mcdonalds' menu. People wait hours just to buy one when they start selling them the month before St Patrick's day. A green vanilla mike shake (which may or may not be more addictive than crack.)

Person X: What the hell is this line for at McDonalds?
Person Y: They released Shamrock Shakes, again!
Person X: Is that a Mexican thing?
Person Y: Irish.
Person X: Ahhhh...bless the Irish and their dairy treats!

by Philly1221 September 20, 2006

Shamrock Shake

A special someone, who is a thicc chunky boy. With thicc calves.

shamrock shake

by Mcdonald’s menu April 24, 2019

Shamrock Shake

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

Shamrock Shake

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. patty’s day last year

by Pizzadumpster March 9, 2019

Shamrock Shaked

When you get with a girl, but then she turn lesbian (or bi-sexual)

I know you was with her, but she likes girls now- you got Shamrock Shaked my dawg.

by Salvatore's Pizza January 26, 2018

Shamrock Shake

An Irish handjob

I met a drunk Irish lass on St. Patrick's Day, and she gave me a shamrock shake.

by Lordwindowlicker March 22, 2012