The Old McNulty is a sexual act in which at least one male or transvestite must be involved. It includes (but is not limited to) putting one's testicles in another individual's (male or female) mouth while ejecting feces on to their forehead.
A: So dude, what'd you do last night?
B: I was hanging out with this girl and guess what?
A: What?
B: I gave her the Old McNulty.
A: Oh, you ol' dog you.
B: I was hanging out with this girl and guess what?
A: What?
B: I gave her the Old McNulty.
A: Oh, you ol' dog you.
by IronSpartan August 3, 2011

by J.B Enterprises April 20, 2018

by Championplayuh January 28, 2018

A word that butt hurt emotional music fans use when Coldplay don't bring out an album like Parachutes #2 or a song like The scientist part 2. Then they will constantly comment on their music videos saying how much they miss old Coldplay and how much they change and then they will analyse their new music to the bone.
"Hey, did you hear Coldplay's new song"
"Yes, i don't like it, too happy, too EDM, i miss "old Coldplay"
"Yes, i don't like it, too happy, too EDM, i miss "old Coldplay"
by J0shisNotPosh September 24, 2016

1. Word to describe a good friend.
2. Name for a drug source you do not wish to reveal.
3. Word to describe a perfect stranger (male) when saying something funny about them.
2. Name for a drug source you do not wish to reveal.
3. Word to describe a perfect stranger (male) when saying something funny about them.
1. "Whats up, old mate?"
2. "I got this gram from my old mate."
3. "Check out that old mate's mullet"
2. "I got this gram from my old mate."
3. "Check out that old mate's mullet"
by Diego June 23, 2003

when a male ejaculates into their partners belly-button crevice and proceeds to punch them in the sides and making the man-juice shoot up like a geyser.
by Ben Paxton September 27, 2007

Named after the famous geyser in Yellowstone National Park, this is a schlong that spontaneously erupts and unleashes a cum geyser right into your girl's face when you pull your dick out of her mouth.
by Mansnake February 11, 2005
