When things are getting so rad that the levels of rad are surpassing the levels of gnar. Resulting in Radaculous (typically a term used amongst skaters)
Dude i can't believe you just ollied that gap, that was radaculous
Something that is bad and ridiculous at the same time.
Neither word alone can correctly describe what you are describing, and therefore you need a combination of these two words.
James: Dude, I didn't do my homework again! This is like my 3rd time...
Jason: Wow, you are terribad. Why don't you ever do your homework? That's badiculous!
James: I have to freakin eat lunch with my teacher because I didn't do my homework! Jason, why do I fail at life?
Jason: You are badiculous. What the hell is wrong with you.