You Better Wakeup

Growing up, my mother would give us multiple warnings to get wake up and get ready for church, school or whatever. The final warning and straw would be followed by ice water to the feet, head or abdomen. The Sonic Grenade seems like it would be pretty effective.

"Simply pull the pin on this amusingly heartless device, lob it into the sleeper's room, yell 'fire in the hole!' and run for cover. Within ten seconds a piercingly loud, spectacularly annoying noise will blast from this comedy grenade's innards..."
- FireBox