Sonic Grenade: The sleeping friends worst enemy: simply pull out the pin, and toss the grenade into the room of snoring mess whilst yelling the classic "Fire in the hole!", then take cover and watch.
Twenty seconds later the most annoying siren will blast out from the Sonic Alarm (there are 3 ear-drum shattering volume settings), torturing the ear drums of the hung over, snoring mass. What's even more brilliant about the Sonic Grenade is that in order to stop the alarm, the sleeper has to find the Sonic Grenade and replace the pin.
