Sound Grenade Edit Meaning

1.

An annoying iPhone/ iTouchapplication that produces an irritating piercing sound at high frequency. Often used to annoy friends, classmates (many old people including teachers can't hear it), and coworkers. Named "sound grenade" because the application visualizes it as a vibrating grenade.

Sam's shitty Sound Grenade split the ears of the whole class-except for Miss Leibowitz; she's too old and moldy to hear it.

See iphone, itouch, high pitched, mosquito ringtone