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1 definition by cass!

1) If you hear someone say "hey oh" you have to say it back.
A greeting.

2) When someone says "hey oh" in a large group of people, everyone has to reply by saying it back.
Usually used jokingly after something raunchy is mentioned.
Example 1:
Person 1: (name)!
Person 2: hey oh!
Person 1: hey oh!
Person 2: whassssssuppppp?!

Example 2:
Person 1: She talks shit behind everyone's back.
Person 3: ... and then she tries to act all nice and shit.
Person 2: I heard she can fit a whole soap on a rope up her cooter.
Person 1: haha, hey oh.
Person 2: hey oh.
Person 3: hey oh.
by cass! December 23, 2007