A wery wide vagina i.e. a vagina(choot) which has been opened up by numerous sexual intercourses over the time & which cant really give the pleasure which a tight vagina can.
It is the superlative degree of bhosda.
Bhosda means the reproductive organ of a female i.e vagina.
When the vagina is fucked is so hard that it becomes 2 or triple of its size then it called BUM BHOSDA.
Note : The increase in size of vagina when fucked is a theoretical concept.
Maine saali randi to kal raat itna choda ki uski chut ka bum bhosda bana diya.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."