1)
Abbreviation for "On God" meaning to heavily
agree to something, and
show that agreement by mentioning the life of God.
2) Misspelling of "OMG" which is an abbreviation for Oh My God/Gosh/etc.
1)
P1: "My favorite part about the party was how
hyper the
DJ was"
P2: "ONG DUDE"
2)
P1: "ONG I JUST GOT TOLD VERY BAD NEWS ABOUT MY
PARENTS"
P2: "You misspelled OMG, dumbass."
P1: "Why does that matter...?"