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2 definitions by moosecabob

 
1.
Adj. non-standard superlative form of "most fun". Meaning that a given something (noun) provides the most mirth or entertainment than any other something.
The funnest way to contract diseases usually involve three women, two men, a broken condom, a goat, and a cheese grater.
by moosecabob October 12, 2009
 
2.
Adj. non-standard comparative form of "more fun". Meaning that a given something (noun) provides more mirth or more entertainment than something else.
This art museum is funner than the last three we went to.
by moosecabob October 12, 2009