when ones bum and leg appear to be fused into one thus giving the appearance that they are just one body part as opposed to two which they actually are. not a nice sight really and rather embarrassing to have a bumleg - altho it cannot be helped!
bumleg is often found on rly skinny people for obvious reasons - these reasons being tht they don't have sufficient meat on them to define their shape into a proper bum shape so insted their bum just fuses into he leg.
by shpannah August 28, 2006
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