Several definitions given here are correct in connecting the term to radical but incorrect in the date of origin. Being old enough, I can attest that it was used at least as far back as the seventies.
by sammmyz December 1, 2014
 Get the radmug.
Get the radmug. by your.moms.spaghettios September 10, 2020
 Get the radmug.
Get the radmug. When you text your crush and tell them you like them and they say they don't like you with a five paragraph text. All you have in mind is rad.
You: Hey I like you do you want to go out?
Crush:Sorry I don't like you but could we still be friends? I don't want to hurt your feelings .
You:....Rad.......
Crush:Sorry I don't like you but could we still be friends? I don't want to hurt your feelings .
You:....Rad.......
by nimnimjim November 29, 2016
 Get the Radmug.
Get the Radmug. by ted foster March 22, 2008
 Get the radmug.
Get the radmug. by Jared December 18, 2003
 Get the Radmug.
Get the Radmug. by VinelSeason July 17, 2021
 Get the radmug.
Get the radmug. 