Yep, keeping those rugrats in line is like nailing Jell-O to the wall, sometimes! Last year, one of my students found out a 4WD Chevy pickup WILL climb a flight of stairs, but it will also break the transfer case off the back of the transmission when it high-centers on the top step! That was an expensive lesson!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!