Definitions by Jane Porter

RO 

1. Random outburst.

2. Uncontrollable outburst of amusement (usually in text form)

3. Used when LOL or LMAO isnt enough

In text conversation:

Kim: I wore a dress over py pants today
Laura: What?
Kim: Yeah I thought is was a shirt
Laura: RO!

RO by Jane Porter December 4, 2009