whats nsfu2?
NSFU2 - Not Safe For Underwear 2.
It's basically an advertisement for the mandkerchief which is a handkerchief with a hole in the middle to be used during masturbation. What they mean is, masturbation causes jizz stains which is not safe for your bed, your sheets, not safe for your underwear too, etc. , so with the mandkerchief, you place over your lap with your junk poking through and do your thing, when everything is taken care of, the mandkerchief catches the fruit that falls from the tree.
NFSU2 - Need for speed underground 2
This is the sequel to the popular game Need For Speed Underground.