(That's part of the 'drool control" program.)
Get him one of these:
http://t0.gstatic.com/images?q=tbn:ANd9GcQBwm-sR50YpidXLGTwlpQENiVtW12l9g8Sv9Ab0ddtoXuGqgOfffmYCCQTYw
LOL. Duct tape it to his face.