Sean McTiernan 

Bald, drunkard bass player, well-known for his penchant for beer, drugs, beer and drugs. Also possesses tendencies to collect inoperable vehicles. However, despite all of these marked characteristics, McTiernan's most defining quality might be his ability to utterly destroy the common domestic bathroom.

Damn, the enamel was eaten off the toilet, I think this is the work of a Sean McTiernan.

Sean McTiernan by Iwunder February 4, 2010

McKiernan

One of the most Irish last names you can have.

All the teachers at my school think I'm from Ireland because my last name is McKiernan.

McKiernan by dudeperson35 November 17, 2012

Mcturnan 

Normally a last name for a male/female. In this case, a male. Mcturnans tend to be teachers,scientist or mechanics that are normally strict but don’t know what they are talking about. They are average high and like to use gel in their hair.

Hey, look it’s mcturnan speaking nonsense again...

Mcturnan by Clout_dictionary February 6, 2019

Sarah McTernan 

A beautiful woman who was a Voice of Ireland Finalist and Ireland's Eurovision 2019 contestant.

Sarah McTernan was robbed at the Eurovision

Sarah McTernan by Jordan Spark 2020 May 17, 2020

mckernan 

Normally a hot high school teacher with big tits

Wow that McKernan has big tits

mckernan by Thfhfhdtfthfyucytytdutfdfffff November 14, 2016

Ron Mckernan

A member of The Grateful Dead from 1965 until his death in 1972. He is most commonly referred to as "Pigpen". He was the heaviest blues influence in the band. He played the organ and the harmonica while also singing lead in many songs such as Turn on Your Lovelight, Easy Wind, Operator, Hard to Handle, and more.

"Pigpen? Oh you mean Ron Mckernan, the Grateful Dead member. Not the peanut."

Ron Mckernan by LoveDawg January 14, 2015

McTernan’s Razor 

The simplest solution is the opposite of what John says.

Mate, how do I make an accurate prediction? Just use McTernan’s razor.

McTernan’s Razor by Schist & Hornblende July 19, 2023