Look Before You Sit

I was on my way home with some friends from a party and we got on the bus to sit towards the back.  At first, to the right of the bus we see a lot of roaches and one of the guys is stepping on all of them.  I go to sit on the opposite side where I don’t see any roaches.  Then another friend said it smells like vomit, let’s move to the front.  So we go to the front and see a seat with vomit on the bus. It smells even worst, so we return to the back of the bus.  After a few stops a couple gets on the bus.  The lady goes to sit in the seat without looking but her partner notices and stops her before she can sit in the vomit.  They move to the front seat just opposite.  The bus is filling up and most people see it so move.  Then a man comes on the bus and sits right in it.  My friends and I all go ewwww….He starts to move around in the seat to put his wallet in his pocket.  My friends are making sick faces and saying how he is smushing it in even more.  The friend sitting next to me asks why the guys sitting behind him or in front did not warn him.  Oh well. He is in it now.  He continues to sit there and we ask “does he not smell the vomit, how can he stay there”.  A lady comes in and sits next to him and again we say ewwww….but this we are laughing because we are wondering what she will do.  She gets up and moves to the back and sits behind us.  Majority of the people that sat next to him got up to move, but there were a few that stayed until there stop came.  One lady kept covering her nose and looking towards the aisle.  Of course, he gets of at my stop and as I pass his seat of course my curiosity gets the best of me and I look down at the seat and it looks spotless.  He completely cleaned the seat with his pants, but he definitely had the trail of vomit following him.  You can’t Make This Shit Up.  What would you have done in this situation?