Redunkulous- adj. the second higest degree of ridiculous. When something is amazing/ shocking/ surprising/ unbelievable etc. beyond normal amazement, but not completly unbeleivable. Something ouright crazy would use the higest degree of ridiculous (see redonkulous).
"Holy Shit that headshot was redunkolous"
"That bitch Tracy dumped me on valentines day. This is totaly redunkulous!"
"Jimmy forgot the beer!? This is completely redunkulous."
When something is refurbulous it can be an idea or a concept that seems outrageous or inconsiderable at first but eventually becomes a given (usually well after the fact). People or things can be refurbulous as well.
1.
Some sailor: "You know, I think the world is actually round."
Some other sailor: "You're retarded."
Historian: "The idea that the world is round is a refurbulous one."
2.
Some stoner: "Man, weed should be legalized."
Some other stoner: "We are refurbulous philosophers in the making."