Why the hell was it banned??
It was banned saying that it was obscene. In fact if you use the right word.
My View :
Though it's not obscene but it's very very NAUGHTY & immensely EROTIC.
Reason: In the ad the lady indirectly tries to show the height of (rough) intimate moments with her husband's inner-wear (read husband) by giving the sex-laden-moaning looks while washing the inner-wear; between her feet; with her hands.