When you don't wipe your ass good enough and it starts to get itchy and or bother you in some way
"Dude, McDonalds didn't have any toilet paper so I had to wait till I got home and I had a bad case of bum disease"
by KKK is Bae April 14, 2016
Get the Bum disease mug.
One butt-cheek with an abnormal size and shape. The cause is from petting Giraffe tongues. Another cause is eating pretzel and cherrios at the same time. Side affects of Bum Disease are excrutiating pain. Feeeling an overwhelming attractivness to Mr.Collins. There is only two ways to cure this unfathomable disease, you must look pictures of sexy nerds and Mr. Darcy. from Pride and Prejudice .
Willis didn't go to school because he had Bum Disease.
by Fredwardmoo February 3, 2009
Get the Bum Disease mug.
An urban myth that is said to have begun in south-east Queensland primary schools. Where by declaring oneself a legend to a group of students, they would reply in return, "No, you are an African Bum Disease".
Marty loudly proclaimed to the masses watching his dominance on the netball court, "I am a legend". To which the girls replied, "No, you are an African bum disease".
by Zechariah-Jebadiah May 14, 2015
Get the African bum disease mug.
Entirely fictitious rectal complaint now sweeping the playgrounds of the UK's Primary Schools.

Will be known as Japanese Butt Disease in the USA.
Tulisa has Japanese Bum Disease

Simon Cowell has JBD
by Scally0 January 14, 2013
Get the Japanese Bum Disease mug.
This is when your bum swells up really badly and can cause huge pain. Its caught from smelling the farts of someone who already has North Korean Bum Disease. Can be treated with around 2 years of bum supplements.
Went to North Korea for a quick fuck, hope I don't catch North Korean Bum Disease.
by BumDisease101 April 6, 2018
Get the North Korean Bum Disease mug.