Anyway, Tim Horton's periodically has a contest whereby you look under the rolled rim of the paper cup to see if you have won a prize. This contest has become hugely popular, to the point where problems with littering and even a lawsuit over who should get the prize after someone threw away a vehicle-winning cup that was picked up by someone else (which I'm sure did nothing to hurt their sales).
The problem with this contest is that the rims of the cups are difficult to roll up. People break nails and Tim Horton's has asked that people (like me) not use their teeth to find out if they have won. (Damned if I didn't lose again this morning.) So this inventor has come up with a device that slips over the rim and when you pull on it automatically rolls the rim of the cup up. For $2 a pop, and the likelihood of the contest's continuing reappearance for years to come, will likely make this guy a lot of dough.
Bastard.