Closed Stalls

You see the large handicap stall is closed, and men are lining up to get into the smaller stall next to it. You can't see into the stalls and you have no idea were your mom is. Just then a man leaves the smaller stall and the next man in line enters. You decide to hop in line and wait to see what's up. You are currently tenth in line. Slowly the line ahead of you starts to shorten. Once it's down to two men ahead of you, you are able to hear a slurping sound coming from the stalls. You get a little worried. Eventually you get to the front of the line. You enter the stall and there, about waist high, is a hole on the stall wall between the handicap stall the one you are currently in. You look in the hole and see......