Definitions by Andrew Dubs

One Yo 

Originates from the movie "Belly", used by Nas. Used as slang for 'Goodbye', or 'See you later'

The term is also quite frequently shortened to just 'One'

"I'm tired. Time for bed. One yo"

"Meet you at Timmy's in five, One"

One Yo by Andrew Dubs September 22, 2008