Top Definition
Something that "hums" (stinks) which also comes from your bum. i.e farting..guffing, trumping...bottom vapours!!!
"Hey what's that awful smell"

It's Andy...he's got bum hum!
by BFREASH February 16, 2010
1 more definition
9 Words related to Bum Hum
Something that "hums" (stinks) which also comes from your bum. i.e farting..guffing, trumping...bottom vapours!!!
"Hey what's that awful smell"

It's Andy...he's got bum hum!
by BFREASH February 16, 2010

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