Is this the most useless product ever? It buzzes when liquid is about an inch from the top of your glass or mug. So what do you think?

Turns out, if you thought it was uselss, you're a jerk, because it's for the visually impaired. Or, for people who like the sound of things that buzz. See? Now I'M a jerk.

[$13, Independent Living Aids]

[Via Book of Joe]