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)
If redonculous is like ridiculous squared, rondaculous is ridiculous cubed... or perhaps even ridiculous to the nth degree.
I mean, that lad's tomfoolery verges on being rondaculous.
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So, you built a raft... with a motor... and tiki torches... to drink beer on. That is most surely rondaculous, chap.
1.) Anything so blatantly and grossly excessive that it defies any other possible description, especially concerning the female anatomy
2.) To be shamefully ridiculous, as to not have an excuse for the amount of ridiculousness thereof
1.) Male #1: 'Ey dog, she thick like a milkshake, Male #2: Yeah, that shit's racdaculous
2.) Girl, your house is so dirty it's racdaculous