I'm Up 

Equivalent to the phrase "I'm up for it," but abbreviated. It's similar to saying "I'm down." Meaning you're interested in joining in on the activity suggested in conversation.

Ron: I'm really in the mood to get ice cream.
Fred: I'm up.

I'm Up by JewForensicsGirl March 5, 2011

I'm Up 

Synonymous with "I'm awake." A two word phrase meaning that the speaker is, in fact, not asleep.

Someone getting woken up by their mom: "Ok ok mom I'm up."

I'm Up by GGGavin June 3, 2020

I'm up 

Awake; stimulated; conscious and responsive to external stimuli.

1. Some reference texts claim that “I'm up” is defined as physically out of bed. This is too specific to be precise. “Im up” (a colloquial shortening of “I'm up for it”) can also mean “Im down with it”. As spacial references, these definitions cannot coexist. Readers who deal with this inconsistency by choosing one definition and politicking for the exclusion of the other are invited to review the urban dictionary entry for “fuck off”.

2. For phrases meaning on one's feet, see: "up and about" or "up and at 'em".

You up?
(in bed, texting): I'm up.

I'm up by FlashPointBang September 13, 2020

I’m Up

Coined by the rapper Suzie Q, I’m up is a way of saying that you can do something. Generally used as a sign of approval.

Moe: Aye moe you tryna go get chipotle and listen to some drake?
Jamie: Shit I’m up.

I’m Up by PBandJ July 14, 2020

I'm up to you 

A phrase used to signify to an individual that you are aware of their current level shenanigans and believe that you have surpassed them in your level of shenanigans.

The phrase is best delivered in a condescending vocal tone.

Garfield: Hey! Odie!
Odie: Whats up Garfield?
Garfield: I'm up to you.

I'm up to you by technocrat September 5, 2011

I'm up against a hard break 

When your wife, kids, or boss are arguing with you and you want to end it. Signaling the conversation is DEFINITELY OVER.
Used frequently by news anchors.

Wife: Baby, you know that trip I was talking about and the car I wanted, and the dinner party you said you would go to?

Husband: Sorry hon, I'm up against a hard break.

I'm up against a hard break by spudsNbuds February 22, 2011

i’m up who 

How to make someone call themselves a poo

Knock knock
Who’s there
I’m up.
I’m up who?
Yes, you are.

i’m up who by 147852369/*-+.0 September 25, 2025