i'm nice 

1. When you do something you think is impressive
2. When you (in a group) do something impressive
3. When someone else does something impressive

Basically a way to say "cool", "awesome", etc.

1. Joe asks to take a girl to prom if he gets 600 retweets on Twitter. He gets 800 retweets.

Joe: I'M NICE!!!!!!
2. You and your team win a basketball game.
You and your team: WE NICE!!!!!
3. You watch Joe take the aforementioned hot girl to prom.
You: damn Joe you nice

i'm nice by ayyNigga January 18, 2015

I’m nice 

When a person who is clearly an asshole wants to defend themselves after being called out for their disrespectfulness.

Kat: Sidy you’re going to hell. You’re so mean.

Sidy: I have no idea what you’re talking about i’m nice.

I’m nice by Imanonymousyoudontgettoknowme February 27, 2018

I'm such a nice person 

A quote to be said, whenever you perform a total dick move, or when retelling a total dick move.

Yeah I totally anaconda-choked Paul while he was drunk,

and then I left him unconscious on the beach for, like, an hour.
Dude was bitching and moaning from sunburn the next day,
so I choked him out again.
I'm such a nice person.

I'm such a nice person by Chewbacca Da Wookie July 6, 2011

I'm such a nice guy. 

A typical saying by guys who's not generally nice. They're simply saying this thinking the girls will have sex with them if they say this phrase. They generally say this over and over to a girl, so she thinks he's a nice guy, but once she rejects him his true colors come to the surface.

Fake Nice Guy: "I'm such a nice guy. Why won't these bitches have sex with me?"
An Actual Nice Guy: "Girls won't have sex with you, because you're a total douchebag."
Fake Nice Guy: "Whatever asshole, I am a nice guy. Girls are just total bitches!"
An Actual Nice Guy: "Whatever helps you sleep at night."

I'm such a nice guy. by SunshineSam218 March 6, 2021

ImNiceSniper 

ImNiceSniper is an X-Box name Duilio Lioce had used before transferring to SnipezACOG. Only OG Skulltroopers remember this name.

2018:
xXxCOLUMNEDxXx: Hey, Duilio, do you wanna play Fortnite?
ImNiceSniper: Yes.

ImNiceSniper by ThatFellowMemer January 15, 2020