I've generally told them to go outside. Our room is carpeted, so if they throw up inside, we have literally have no classroom for the rest of the day. Well, today, a kid had to throw up and headed outside, but only made it as far as the entrance to the door. He threw up all over the door, just outside the door, and all over the backpacks (room is too small for the kids to have them inside). Needless to say, this caused some major problems. Door open - vomit. Door closed - vomit. I couldn't even remove the kids from the room because they would have to step through vomit to get outside. Luckily the janitor was speedy with the cleanup. But at least my kids were positive about it. As one student remarked "Wow, that kid's really good at barfing!"