Ight is originated from the word "alright" but people over the years have become to lazy to say alright. Ight is most common among skaters,punks and gangsters. It is a very fun word to use.
jake: yo kenny you wanna come skate with me?
Kenny: Ight, sounds good man!
Comes from alright and means "ok", "good", "well", "yes", "cool" and just any other affirmative exclamation. Used as a funny slang :)
A: How the donuts?
B: They ight!
The swag way for sayin' "alright", "okay", and "sure"
derived from Ismail
Jim: you want to come to play basketball
Ismail: "Ight, hows 3'"
Jim: "OK"
Saying ok but in really you don’t give a fuck but keeping it on the low
the noise that is made when one thinks something is a little entertaining but not enough to make a full burst of laughter. also in another case you don't want to make your friend feel bad when he makes a stupid joke, so you make that noise to be a good friend
your friend says "wow thats big" and your other friend says "thats what she said (obviously stupid joke) you say "ight ight ight" to imitate real laugh, without giving the full effort to actually laugh