The samurai is selling a nice thick pie. Do you want to BUY it?
|( を ) う＊る||
I sell something
|( が ) う＊れる||
something is on sale
a business, a line of work: (the camera business, the pimp game, the clock business, etc.)
your sister (when your brother when he runs out of meth money, he turns into a `売春男') !!