An even more radical version of radical dude. It's like amazeballs. Only to be used in XTREME situations! It's radical bro.
"Woah dude, that bro just punched a bird in the face when he jumped off the building!"
"Woah dude, that's radicool."
"Woah dude, that's radicool."
by PAWPLE_hat November 13, 2017
Get the Radicoolmug. heel flip indys are not radicool
that girl looks like a pig smoking a cigar while eating a pork pie its so radicool
that girl looks like a pig smoking a cigar while eating a pork pie its so radicool
by hyphyordie March 28, 2009
Get the radicoolmug.