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.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.