on 

to be high or drunk
basically under the influence

DAMN i was on, no wonder i slept with the bitch!

on by G-Ci April 12, 2009

On 

to be gone off a pill or drunk, high, leanin, of sum sort or all of thee above

bruh im on like shyt!

im onnnn bruh!

On by stix1015 May 23, 2009

on 

To hold, or possess drugs that you are willing to sell.

"Are you on?"
"Is Sampson on?"
"I'm on at the moment"

on by Diego June 23, 2003

on 

1. To engage in certain conduct, behavior, activity with a conviction of progress, success, or moving forward.

2. An Affirmation of becoming.

1. I'm going to get my groove on tonight.

2. I want to get my learn on, so I'm going to college.

3. I'm about to get my grown man on because I'm becoming a daddy.

on by Spnish Shaft March 8, 2008

On 

1) Preposition; Above and touching a surface.
2) Adverb; Working, conducting their intended task.
3) Prefix; Continuously, continuing.
4) Slang Verb; To be menstruating.

1) I was on your mother all night.
2) Your computer is currently on.
3) The project is ongoing.
4)
WOMAN: "I'm on at the minute. Fucking men, they're all bastards..."

On by Stuart Fletcher January 18, 2005

on 

What happens when someone dances at you, and you dance back.

"It's on!"
"No, it's not on."
"Oh, it's on!"

on by Jonah Rowley November 13, 2004

on 

Another way to say a girl is on her period. I dislike the word period. I dislike the word menstration. And guys do too. So...just say, "She's on".

What's wrong with her?
She's on.
Ew.

on by Ms. Funty January 24, 2008