No, not this kind of mudflap, or even this kind -
But along those lines...
And this thing, which is basically a skull shaped grapefruit-sized block of aluminum:
And then this, which will appeal to your peyote smoking microbus driving Southwestern mountain biking friends:
All this bicycle finery was spotted at Ales and Trails, for sale by a NorCal outfit by the name of Dirty Dog MTB.
Sticker image from www.northernsun.com