a derogatory word used for muslims in India. Originally 'mulla' means Muslim. Due to internet culture, several people started putting the letter 'B' in some derogatory words, like 'nibba' instead of 'nig*a', the same way 'mulla' became 'bulla'
I now bull he/she hard as rasshole.
He is a bullin cunt.
Mind your bullin self from bout hay.
I bull ya sista last night.
Don't fucking come round me with dat bullin cunt ya pussy, u want bullin owa?
You iz de biggest bulla in eagles nest fam.