Roll Up the Perforated Rim

A lot of you seem to be Canadian, so I assume a lot of you know about the "Roll Up the Rim to Win" promotion that Tim Hortons runs every spring to keep people from giving up coffee for Lent (at least, according to my friend whom I've mentioned before). But I also assume a lot of you don't know about it, so here's how it works: You buy your coffee (or hot chocolate) at Tim Hortons—yes, Firefox, it should have an apostrophe, but it doesn't—and it comes in a paper cup as usual. But these cups, unlike the ones used the rest of the year, have printing inside the rolled part of the rim. When you're done drinking your hot drink, you roll up the rim to see what you won. 1/6th of the time (according to the signs), you win another coffee or hot chocolate. The big prizes are things like cars, TVs, and bicycles usually.

Anyway, the rims are a bit annoying to roll up. The common technique seems to be to flatten the top of the cup such that the part of rim you have to roll up (which has an arrow pointing to it) is flat, and then roll it up with your thumbs, but that's not super easy. There's also a keychain tool called the Rimroller that you slide down over the section of rim and back up. On the way down it cuts down through the rim on each side of the section, and on the way up it unrolls it. Either way you have to rip across the bottom of the section of rim so that you can keep it to redeem later without keeping the whole cup.

Another solution, the one I'm proposing, would be to perforate the rim at the factory on either side of the section to be rolled up. The perforations could also go across below the tear-out section, as long as the wax would be enough to maintain watertightness.

(And I think that might be my greatest ever ratio of preamble to actual idea description.)

N/A [2019-03-29]