on someone's back 

To annoy someone, to give them a hard time or to be in their business.

Ex. of being on someone's back:

Girl 1 - It's too cold for you to be wearing shorts.
Girl 2 - Damn, bitch get off my back.

on someone's back by Lalaloopsie17 May 21, 2014

to get (or have) the drop on someone 

to get (or have) an advantage on or over him/her/them.

to get (or have) the drop on someone by Mr. Terrence L. Trezvant October 5, 2003

getting Flippy on someone 

pertaining to a certain Happy Tree Friend, it means to violently attack and defeat someone.

I don't want to be present when he's getting Flippy on someone.

getting Flippy on someone by Happy Noodle Blacker August 22, 2006

To Snail Up (on someone) 

To be extremely slow at responding to one's request

To Snail Up (on someone): "I asked Brownie a week ago for some figures and she still hasn't come back to me yet.", "What, she still hasn't snailed up on you?"

To Snail Up (on someone) by Orbit9107 August 11, 2010

going all caps on someone

When one becomes so enraged that they shout at someone online through email, text, or social media by using all capital letters. Quite often overuse of exclamation points will accompany the text.

FUCK YOU, YOU FUCKING FUCK!!! is an example of "going all caps on someone"

going all caps on someone by itallica September 22, 2010

B my L on someone's T's 

A quote in the movie Forgetting Sarah Marshall which means, Blow my Load on someone's Titties.

Brian: You don't need to put your P in a V right now.
Peter Bretter: No, I need to B my L on someone's T's.

B my L on someone's T's by Diego B May 23, 2008

GO MEDIEVAL ON SOMEONE'S ASS 

to lose one's temper on, to lose one's emotional equilibrium and act cruel or savage to somebody

After the pickle-sniffer winked at Henry, he went absolutely medieval on the fudge packer!

GO MEDIEVAL ON SOMEONE'S ASS by weave October 7, 2003