1 definition by Onsopussy

1980s. Meaning yes or I agree.
A: "Aye bro this songπŸ”₯πŸ”₯"

B: "On So."

A: "We still going out tonight?"

B: "On So"

A: β€œ Damn them hoes cold.”
B: β€œ On So.”
by Onsopussy January 24, 2018
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