boka choda
Means "Stupid Fucker" in Bengali.
It is probably the most common curse word used by Bengali men, followed closely by shoorer bachcha (pig spawn).
John and I were at the Virgin Megastore in Times Square. Of all the wide variety of music CDs he can choose from, the white boy had to buy the new Jessica Simpson's CD. Good god, who knew he was such a big boka choda!