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a nickname for someone who makes you uncontrollably silly& happy when you see them. Someone who unknowingly makes faces while watching television. Someone with a smile not like any other. someone you can talk to at the beginning & end of everyday. They make the most crazy moments worth while. & you just can't help but love em!
"bum bum are you awake?"
"i love you bum bum!"
"goodnight bum bum."
by bumbumdotcom August 16, 2012
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2
Possibly the cutest way of demonstrating one's posterior
-"aww, did you fall down?"

-"yes mommy, and I hurt my bum bum" =(
by Nancey July 03, 2003
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3
anus, arse, ass, behind, backside, booty, bottom, bum, buns, butt, buttocks, can, derriere, dorsal, fanny, fundament, heinie, hindquarters, hind end, keister, posterior, prat, rear, rear end, rectum, rump, sphincter, stern, seat, tail, tail, tooshie, tuchus, tush
"Daddy, what do I do with this fudgesicle?" ... "Well, Jonny, you can stick it in your bum bum".
by john November 24, 2003
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5
young school-kids way of saying 'ass'. Also see botty, bum, tush
"Oopsie daisies! I landeded on my bumbum!"
"Hey, thaaaat's great, kid."
by Bastardized Bottomburp May 08, 2003
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