Top one 

Wicked, excellent, nice one etc.

As in, "Top one, nice one, get sorted" - the phrase of the late 80s/early 90s when urban youths were heading out to raves and plying themselves with ecstasy. The phrase was committed to vinyl in 1991 when Altern-8 recorded it as a sample on their top tune, Activ8.

Top one by Mister Lee December 15, 2008

build one on top 

Mixing another cocktail in the same glass before the previous one is fully consumed.

Q ). You almost ready for another drink bro? A) Ahh, just build one on top

build one on top by Crown and diet May 4, 2018

one up top 

To always have a live round in a guns chamber.

Aye, nigga you got that fire on you just in case these niggaa bust?
Yea you know i keep one up top ahk.

one up top by Pacman206 January 28, 2017

Put One Up Top 

To take a dump in the tank part of a toilet. Usually done as a sick prank or a means of revenge

John totally dissed me so I went to his bathroom and Put One Up Top!!!

Put One Up Top by R-Dickulous October 18, 2020

One up top 

Referring to a gun. you have a bullet in the chamber and you’re ready to shoot.

“I got one up top nigga you better duck”
“Aye slat you got da strap?” “Yea nigga One up top”

One up top by BawskeeGang January 16, 2019

catch the one up top 

To shoot someone with a bullet loaded in the chamber of a gun.

Yo James is trying to fight you.

I ain’t trying to throw hands if he fucks with me he gonna catch the one up top.

catch the one up top by EJontop September 14, 2018

blow one's top 

To loose one's temper

blow one's top in context:

Serena Williams blows her top, and her chance, at the US Open (The Guardian, 13 September 2009)

blow one's top by Jed_7 September 14, 2009