We never thought we'd see the day but Sunday in the wee hours of the morning (around 2:30ish) all three of our kids were throwing up. In the 3 years that we've had 3 kids they've never been sick like that on the same day. Back to back days of illnesses have occurred but never at the same time.
It's funny you'd just lay down after helping one kid and be slowly drifting back to sleep when another kid starts throwing up. I think I've witnessed enough vomitting to last the rest of the school year.