Slang - Magir Baccha is a Bengali slang meaning "Son of a Whore" there are also equivocal interpretation to this phrase - It can also mean "Son of a prostitute", "Son of a bitch" etc.
Apni akta magir baccha - আপনি একটা মাগীর বাচ্চা
by Disnatscus July 09, 2023