I sometimes get sh1t (presumably of canine origin, but quite possibly human -- too many homeless drunkards walking about) on my tires and even the frame. It's a b1tch to clean, too -- doesn't want to go off as easily as mud.
I have never experienced the urge to throw the bike away, however. ) Only the desire to kill all dogs (that includes owner-attended ones as they aren't ever going to pick up the crap the critters leave) and homeless drunkards.
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