Sep 21
When you see someone you dislike or have a problem with and you guys automatically break out into a scrap upon seeing one another.
1. "If that guy comes through its on sight"

2. "I saw that Evan guy at a party and it was on sight"
by AirMtb May 29, 2016
2
On sight means that when you have beef with some body you automatically fight them. There is NO talking it out
"Yo girl when I see her ima beat that bitch ass on sight!"
by Tiffany_Knows October 11, 2018
4
A term in rock climbing, describes completing a lead route without falling. The climber must not know anything beforehand about the route or have watched someone else climb it. See flash and redpoint.
I made the first ascent of this route by onsighting it because it was probably only a 5.7.
by sano September 21, 2003
5
As soon as you see someone or a particular person
1.When I see her we fuckin on sight like foreal
2.Like she came in the bathroom with me bro like it was on sight
by Creamycameltoe69 October 06, 2018
6
When there is no money being made off it, most people that talk about on site shit aren't going to do anything but bait somebody into a possible jail visit over what they say or do in response to being antagonized by some pussy.
D tried to get all his friends to come watch the fun of getting this crackhead dude locked up for saying or doing something really stupid on sight.
by Mr. 695-Miffles-bot September 22, 2018
7
A good way to turn someone into a YouTube star, pretend you want to fight them and have a friend film it.
The two girls pretended to almost get in a fight on sight and claimed they were doing for you, the viewing audience.
by Mr. 695-Miffles-bot September 22, 2018