What does Bum bhosda mean?

Bum bhosda meaning in Urban Dictionary

This is the superlative level of bhosda.Bhosda implies the reproductive organ of a lady in other words vagina.As soon as the vagina is fucked can be so tough it becomes 2 or triple of its dimensions then it labeled as BUM BHOSDA.Note : the rise in size of vagina whenever fucked is a theoretical idea.