A child's insult

A way to express the annoyance of something going wrong. Usually used as a polite way of letting out frustration without swearing.

A name of endearment.

A bum which smells of poo!

a anus which has not been fully wiped after having a poo

Poobum is a word used often to insult violently and to cause major psycological damage.

After taking a massive shit and wiping, Poo Bum is the last bit of shit that won't go away. Usually noticed after getting up and walking around for a while leaving your ass cheeks moist. Cured with a Wipe Down