Yankee Fan 

A person who dare not enter Boston without a flak jacket and a gun.

Yankee Fan by Anonymous October 5, 2003

Yankee Fan Syndrome 

1.To exhibit a strong sense of pride that is largely undeserved.

2. To feel superior to everyone even though you are not.

3. To feel that you are the greatest based on a past that you were likely not involved in.

That guy thinks he is so much better than any other baseball fan because he roots for New York. He has a case of Yankee Fan Syndrome.

Yankee Fan Syndrome by Theguy945 June 28, 2010

Yankee Mustache 

Nasal mucus on the upper lip as a result of cold weather.

Hey Patrick, wipe off your Yankee Mustache, ya freakin' losah!

Yankee Mustache by Dick Shannery April 13, 2019

yankee nation 

As referred to by George Steinbruner, the belief that all yankee fans create a "nation". You're part of yankee nation if you're a yankee fan. This was George Steinbruner's way of saying that the yankees have more fans than any other major league baseball team.

yankee fan: "I'm in the yankee nation!"
red sox fan: "go suck a bag of dicks, and pull that dildo out of your ass"

yankee nation by stevo-k January 30, 2009

Yankee Bravo 

Navy Terminology -
In the phonetic alphabet, Y=YANKEE B=BRAVO. Yankee Bravo is short for "Your Boy", which is a derogatory term used to describe a dirtbag under instruction of a higher ranking member.

"Hey shipmate, you better get Yankee Bravo's shit straight or else."

Yankee Bravo by loomis3000 August 11, 2009

Yankee Stew 

A hot load of spew, cum, man juice. Shit as a result of a hearty, vigorous yank and wank.

Braaaaahhh. What a mess. I just blew some yankee stew. I couldn't find my gak sock. Pretty sure your mom took it.

Yankee Stew by Eaton Holgoode March 21, 2017

Yankee with no brimmer 

When somebody recreates the Yankee with no brim line from the viral internet meme

Wow dude, nice Yankee with no brimmer.

Yankee with no brimmer by Gablando May 19, 2020