Top definition
Any variety of underpants where the buttocks are visible due to the fact the fabric has gathered into the butt crease revealing the cheeks.
Man these bumderpants are giving me an enormous wedgie!
These bumderpants keep riding up my ass crack - ouch!
I can see her bumderpants through that sheer skirt.
by Ran6da September 15, 2017
Get the mug
Get a bumderpants mug for your cat Nathalie.