means something is very fun and will never get old
damn, this game is fun on a bun
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Comes from a way of describing hot dogs on a bun. Hotdogs are pretty tasty and we all know eating tasty things are fun to do. Thus you get fun on a bun. Generally used as a compliment.
Example 1. This hot dog is fun on a bun!

Example 2. That mime is sure fun on a bun!
by Fun on a bun July 25, 2006
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meaning its going to be super fun

it cant be boring

its like your eating fun
ilove it at her house its fun on a bun
by Veggygirl714 August 21, 2009
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1.) When something is really fun.
2.) Used in expression of joy about a sandwich.
1.) MAN, last night, we went down to the bar... it was fun-on-a-bun!
2.) Subway is always fun-on-a-bun!
by BitterPoetMadman December 15, 2006
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Doing cocaine off a prostitute's ass.
Fun = cocaine
Bun = Butt
Can we do some fun on a bun tonight for 200$?
by Athorith May 6, 2021
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this phrase was once used on futurama's second movie the beast with a billion backs in the scene when bender duels calculon. it is a way to express excitement or anticipation
steve-you ready to go to the club to find some ladies
bill-THIS IS GONNA BE FUN ON THE BUN
by FullMetalKunai August 31, 2009
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Synonymous with fun on a bun , It's essentially a better way of saying something will totally kick ass. Used to describe occasions in which your run-of-the-mill phrases describing how much fun something is gonna be just can't aptly describe the amount funs that will be in your buns.
Can also be abbreviated FIMB.
This party is gonna be Funs In My Buns, hope I don't get the runs
by Teddybob Muchacho December 15, 2010
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