getting high on his own supply

When you start to believe the hype about yourself: arrogant superiority.

That dude is acting like he all that. He's getting high on his own supply!

Own

Synonymous to "don't".

Girl 1: Why did he break up with you?

Girl 2: I own know, I always treated him right and I never cheated in him, I own know, for real.

Mother: What do you want for lunch?
Son: I own care, whatever we've got in da fridge.

Not to butter my own toast

A phrase used before self praise in order to make oneself sound more modest

"Not to butter my own toast, but my fit is lookin mega fly today"

Rather eat my own shit

Used to express that you really don’t want to do something.

Are you going to the football game? Hell no, I’d rather eat my own shit.

swimming in a pool of his own piss

Wallowing in a situation that you created and could easily get yourself out of while also trying to make others miserable to make yourself feel better (trying to drag them into the pool as well).

Sam: Have you talked to Rick recently?
Tom: Not really, he's been even more of a jerk since his girlfriend broke up with him. Every time I try, he just makes me feel bad about something. I know he's upset, but he's just trying to make me feel to feel better about himself.
Sam: Sounds like he's swimming in a pool of his own piss and trying to drag you in.

J own ya

Derogitory rewording of the name Johah. Humorous way of trying to belittle or talk shit in font of others to a person with that name whom you believe to have you under thumb

She resented her husband for husband started calling him J own ya

player own

v. An ability found in MMORPGs that allows one player to take complete control of another player's character.

Stupid orc's gonna rue the day he hatched when I player own his ass.