A great way to torture young and old alike.
The Wrongulator is a gag calculator that gives incorrect answers to calculations. I’m fascinated by the idea — I wonder if they’ve just got a standard calculator controller in there, and then a secondary system that scrambles the results, or whether it’s a pseudorandom number generator, or what. You’d want it to produce plausible outcomes (5 x 5 = 30; not 5 x 5 = 324527) but who knows if the manufacturer paid attention to this…
(via Red Ferret)