Shamrock Shake 

When a Irish bitch gives you a wet tit-job in a McDonald's (usually in the restroom but if your lucky, through the drive-through window)

Person 1: "Yo I got a Shamrock Shake at the local McDonald's bathroom."
Person 2 'Why in the bathroom?"
Person 1 "What."
Person 2 "What?"

Shamrock Shake by That messedup April 30, 2020

Shamfuckery

A term used to describe something that is unbelievable and improbable but still occurs and usually has a negative meaning behind it; absolute bullshit

Did you see Graham steal those handles from the party? That was absolute shamfuckery

Some shamfuckery happened after the cops thew us out of the concert.

Shamfuckery by everest76 January 17, 2014

Shamrock Shake 

This is when a person dyes their pubes green and then has the partner cum on the pubs. After the cum settles the partner then consumes the solution.

“The shamrock shake I had last night was delicious!”

Shamrock Shake by VapeLord421 May 12, 2018

Shamrock 

Altered Humboldt County strain of quality Marijuana, grown from the plant "Pretzels" in Northern California. Known for its advanced germination-mid vegetation cycle, into an outdoor beast in early vegetation.

"Pretzels just yeilded the SHAMROCK bud."

Shamrock by nich March 17, 2004

Shamrock Shake 

a cum shot

She took the shamrock shake to the fact

Shamrock Shake by luck-o-the-irish February 27, 2009

shamrock creampie 

When a person has an std, specifically gonorrhea or chlamydia, and ejaculates in someone. The person creampied may grossed out by the resulting green jizz.

Girl 1"OMG, Jason didn't pull out and it was all green and gross"
Girl 2 "damn, getting a shamrock creampie is the worst"

shamrock creampie by Crimsondeath798 February 14, 2017

Shamrock Shake 

When you are fucking a leprechaun so hard like a cowgirl and they squirt out green cum and go into a seizure

Dude, i was in Ireland and did a shamrock shake with 20 leprechauns.

Shamrock Shake by George lopez April 6, 2014