One Track Pony 

Another way of saying One Hit Wonder, an artist known for only one song and nothing else.

Crazy Town is a famous one track pony with that song "Butterfly" in the early 2000s

One Track Pony by Phyterpilot April 19, 2019

One nacca 

Only has one testicle

My mate macca only had one nacca

One nacca by El gizardo May 4, 2019

One Direction

A group of four liars. We all love them but are extremely pissed that it has been almost 4 years since their hiatus started.

“One Direction lies to us.”

One Direction by Niallerismydad June 19, 2019

One Direction

A British boyband that doesn't know what an 18 month hiatus is.

Interviewer in 2015 When will One Direction comeback?

One Direction In 18 months

*3 years later*

One Direction *still hasn't come back but is winning awards*

Directioners One Direction maybe took a break but we didn't.

One Direction by Directioner Since 2010 June 30, 2019

one man's treasure is another man's trash 

What one sees as valuable, another would view as garbage or junk. Reversed form of "One man's trash is another man's treasure".

Peter: OMG, you have the Johnny Seven OMA Gun! That was the coolest toy ever as a kid.

John: Throw it out man. That thing is worthless, I kept losing all the ammo.

Peter: I guess one man's treasure is another man's trash.

one man's treasure is another man's trash by KnightofNerdom August 20, 2019

one for the dick 

When an athlete has six championship rings. So that they can put the sixth one on their dick

Michael Jordan has so many rings he’s got one for the dick.

one for the dick by Bhuck September 14, 2019

One-Bean Taco 

A woman’s clitoris and vulva.

“What are you having for dinner tonight?”
“One-bean taco if I’m lucky.”

One-Bean Taco by Alistair Cookie October 20, 2019