Top Definition
A pair of tidy whities, stretched up and over the shoulders, arms coming out where the legs usually go.
Dumbass, wtf with the montana butt floss?!? Are you trying to figure out the ultimate wedgie? Or did you just have a bongload of salvia?
#wedgie #butt floss #unitard #underwear #swimsuit
by ratstalker March 29, 2013
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