When it comes to fast food in general, one unwritten rule you must abide by is this: Don't look at it too much.
When you stare at the inside of a chicken nugget too long it stop looking like chicken. When you look at a hot dog for too long, you start wondering what part of what animal you're looking at. And when you open a Tim Hortons sandwich, you simply never know what you're going to find.
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This is what happened to one Canadian customer who made the mistake of opening up their breakfast bagel sandwich only to find raw bacon and rotten lettuce.
Will you be double checking your sandwiches from now on, or do you think ignorance is bliss?