Engadget calls it “skull-shattering fun” and Gizmodo labeled it “ear shrapnel.” It’s available at Paladone.com and Boy’s Stuff, though nobody seems to have yet found a domestic supplier. From the catalog page:

The Sonic Grenade features three different levels of the most noxious sound since the last Westlife album. To launch, pull the pin and throw it towards your target. After 20 seconds, the sonic explosion occurs, giving even the deepest sleeper a wake-up call like they’ve never had before. You can only stop the sirens by replacing the pin, and if you take that out of the room, lazy bones will have to get up and come and grab it off you – mission accomplished.

File this next to the Annoises CD.
annoying, boys stuff, ear shrapnel, engadget, evil, evil joke, funny if it isn’t you, gizmodo, grenade, joke, noise, noise grenade, paladone, prank, skull-splitting, sonic alarm, sonic grenade

Via Gizmodo: a CD of annoying sounds at Gadgets.co.uk. Twenty “ear splitting” sound effects and a pair of earplugs “for your sanity and protection” for £14.99. What 20 sound effects?

• Drill
• Party (at least 200 People)
• Orgasm (Outstanding)
• Train
• Drum (Played by a Child)
• Inhuman Screams
• Walking (High Heels)
• Domestic Squabble
• Doors Banging
• Bowling
• Unhappy Dog
• Practicing a violin
• Traffic Jam
• Garbage Truck
• A screaming newborn baby
• Phone Ringing
• Ball Game
• Pigeons
• Spring house cleaning
• Cock-a-Doodle-Do!

Usage instructions?

Choose your favourite track from this hilarious CD, turn up the volume, and sit back (or go out for half an hour) and reap sweet revenge.

tags: annoy, annoying, cd, earplugs, insanity, noise, noises, revenge, sanity, sound effects, sounds