Commonly misspelled as 'frivolous', frivulous means something that almost doesn't apply to reality, mainly used to describe something cartoonish, goofy or from the uncanny valley or something like that.
"Bro, look at this frivulously weird person conveniently walking across the road over there!"
"Damn, they look weird"
Not to be confused with frigger, friggerius and friggerus. This word is powerful, it came from a special thought. One filled with power and strength. This word is used when no other can be.