I have found myself sitting directly across from people clipping their toenails on the subway before.
I'm not sure which part is worse: the fact that I have seen this more than once, or the fact that I'm never quite sure if they're actually catching all of the clippings.
I think boogers aren't so bad, as long as you're not shaking hands right afterwards -- I mean, a little bit "are you three years old?" but not really gross. Nail clippings are not really so much gross as grossly *bizarre.* Foot jam -- mega gross.
I'm not sure which part is worse: the fact that I have seen this more than once, or the fact that I'm never quite sure if they're actually catching all of the clippings.