Bum shadow 

The area beneath the bottom cheeks left white by a tanning machine due to the posture adopted by the sitter.

Look at that micro-bikini over there!" "Yes. Its so small you can see the bum shadow.

Bum shadow by aureliozen June 27, 2010

bum tan 

Getting that unique that no one but a bum can get from sitting in the sun for hours asking for change. Bum tans take about one summer to fully blossom.

A bum tan is generally super leathery and looks similar to what a construction worker's tan.

Have you seen John lately? He's got a sweet bum tan going on.

bum tan by loodpreh2010 July 17, 2010

Bum Milk 

The act of drinking seamen out of a womans asshole after a man has ejaculated all of his goods into her.

Dayum gurllll! I just tasted the greatest bum milk from my lover Laquonda, I guess you can say I'm a lesbian and a fool for bum milk!

Bum Milk by Especially May 6, 2011

Bum-comfortable

For men or women: When going out in public and not wanting to dress appropriately due to desiring comfort over style and not caring what anyone thinks -- dressing down in one's at-home comfy clothes. Not shaving, etc. Looking like you just woke up, a bum.

Hey, let's go out tonight? Ok! But I'm dressing Bum-comfortable, like it or not!

Bum-comfortable by Brandon Brando August 29, 2011

Bum hump

A word that can be used in the place of butt fuck.

Man 1- your gay!
Man 2- I hope you get bum humped while you sleep!

Bum hump by sethisgreen18 January 20, 2012

Bum bungler 

Playful adjective used to describe an enthusiastically amorous homosexual male.

"That Berty... He's a bum bungler, you know."

"Oh, is that so? I thought I was the only gay in the village!"

Bum bungler by Wubwubwubwubwubwub November 6, 2012

bum ear 

An ear that Alex Tilley has, it's the kind if ear with a bum at the bottom of the ear lobe, like a bum chin but just on the ear

Alex Tilleys bum ear chin

bum ear by King bs November 11, 2013