When I see someone eating a hot dog, I just see someone eating a hot dog. It's shaped that way for practical reasons; smut does not enter into it. Now, if that person is eating an ENORMOUS hot dog, and writhing around in 'oooh - it's so BIG!'-type sexual ecstacy, that's a different story. Otherwise, though, a hot dog is just a damn hot dog - if you're seeing it differently, it's because your mind is on the hunt for smut.