A rare disease in which your butt crumbles into pieces from being butthurt. There are several stages at stage 5 you will need to operate at stage 9 you will need the iron butt and at stage 11 there's nothing more that can be done for you god have mercy on you soul.
Person one: Have you talked to Josh lately?
Person two: nah, that guys Crumblebutt is like stage 11.
Person one: more like crumbleasshole that fucker can't take a joke.
random giant from Narnia(the lion the witch and the wardrobe) when i first heard his name my class got so addicted to it they are still mad at it so hard that they will kill me if i disgrace him lol
Kevin: hey what should we name our kid?
Maria: i think i know i know a name!
Kevin: What?!
Maria: RUMBLEBUFFIN!!
*boom*
And that was Maria's last words
1.haley next door 2. a person who has been attacked or bitten by a flock of bees and is no longer able to poop
3.a person who has develop leprosy and has no butt and had to have a bee replace their butt
1. haley ur such a bumblebutt
2. oww i got attacked by a flock of bees now ill be called bumblebutt
3. crap i lost my butt now it is pointy and kills. heck im a bumblebutt