The wall is not, in fact, a tissue. For at least one disturbed schmuck here at work, though, this realization hasn't quite sunken in yet. I keep noticing that when I go use the urinal, I'm forced to stand there and stare at someone's old, dried boogers while I help to take part in the nitrogen cycle.
It's really fucking gross.
But they don't seem to be limited to simply using the wall. I've noticed that they also like to use the doors to the bathroom stalls. Did they think people wouldn't notice boogers dangling off of everything? It's totally disgusting. And they must know it's gross and shameful 'cuz I never hear anyone do it when I'm in there. They must just wait for some secret private moment when they restroom is all to their own and they can paint the walls with snot.
It's freaking gross.