look up any word, like half chub:
 
1.
a contraction of radical and dude for stoners who can't be bothered to say the two words seperately
This weed's radoo.
by Manly Excellence December 07, 2011
 
2.
The combination of the 2 words "radical" and "dude" resulting in a very cool unique adjective to describe the previous extreme actions of someone.
that freshie you floated was radoooooooooo
by monkey 56 July 21, 2008