Definitions by Onsopussy

on so 

1980s. Meaning yes or I agree.

A: "Aye bro this song🔥🔥"

B: "On So."

A: "We still going out tonight?"

B: "On So"

A: “ Damn them hoes cold.”
B: “ On So.”

on so by Onsopussy January 24, 2018