Top definition
A cellphone that vibrates while in your back pocket.
It was funny when that guy's cell went off during the lecture, it gave him a humbum that startled him.
by putzilein January 10, 2015
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Aug 3 Word of the Day
Condition which causes you to place an Amazon order, then shortly after remember something else you needed and place another order.
Wow, 10 Amazon boxes showed up on my door today. My Amazheimer's must be acting up again.

Person 1: Bro, your Amazheimer's is getting out of control.
Person 2: It's OK, I have Prime.
by SamboMayhem August 01, 2020
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2
A gay male usualy sounds like justin bieber who takes large amounts of cock in his ass,Thus making him a humbum, They usualy scream OHHHH FREEDDD and ride pink bikes on christmas wearing tutus and getting fucked in the ass in a semi truck,
Gay fag: Hey sexy why dont you call me humbum in that semi

Guy: Oh hell nah bitch i dont roll that way
by Dusty Duke February 13, 2012
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3
someone is a humbum if they put their shirt on backwards
by hip.sartorius.15 June 23, 2019
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