Fun Bun 

A bun shaped object that you can consequentially have sexual relations with, producing fun.

Me: OMG!!1! I wrapped eggcrate foam around my latex glove and made a fun bun!

You: How Fun! Let me try!@!

Fun Bun by shitckae66969 December 9, 2008

Fun Bun 

How the woman of your dreams arranges her hair before she is about about to give you the blowjob of a lifetime!

I was like pounding my fists on the bed yelling "Fun Bun, Fun Bun, Fun Bun", until she eagerly came out of the bathroom with a Fun Bun I could really grab on to!

Fun Bun by Mjamd November 20, 2017

Fun Bun Friday 

Used to describe the last day of the working week when members of an office bring in sweet sugary buns, doughnuts, cakes and pastries for everyone else to binge on. The Starbucks Cinnamon bun is a good Fun Bun Friday staple as is the Krispy Kreme dozen donut box.

Secretary 1: Sandy, what day is it today?

Secretary 2: It's Wednesday dude...

Secretary 1: Damn...still two days left until Fun Bun Friday!

Secretary 2: Don't remind me! In fact I feel like a fun bun right now...

Secretary 1: F**k it. Let's go to Starbies!

Secretary 2: Cool...let's roll!

Fun Bun Friday by lady lynxx April 9, 2009

bun fun 

To engage in the act of anal sex.

Care for some bun fun?

bun fun by Lissy_k September 18, 2008

this is gonna be fun on the bun 

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

this is gonna be fun on the bun by FullMetalKunai August 30, 2009

fun on a bun 

means something is very fun and will never get old

damn, this game is fun on a bun

fun on a bun by i_put_hotdog_in_my_rectum June 8, 2018

Fun on a bun 

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

Fun on a bun by Veggygirl714 August 20, 2009