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 24, 2006
Top Definition
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 20, 2009
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
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.