Why do sand niggers smell?

(This is not meant to be a troll)

But why do they smell?

It's hilarious, before 9/11 there were no racism towards brown people. Now nigger jokes are being used on brown people, and there's 'sand niggers' and 'towel heads'. But towel heads is my favourite, because it's the sikhs that wear turbans, not muslims. Rednecks amirite?