Our minds are BLOWN.
Y'know how in Home Alone Kevin's parents don't realise he isn't there because they don't have his plane ticket, and that's how he gets left home alone, blah blah blah?
Well, turns out it's Kevin's dad who is to blame.
Don't know what we're talking about?
Keen-eyed Reddit user 'bobcobble' has discovered that the night before the flight as the whole family is eating, Kevin's dad accidentally sweeps his ticket into the bin along with all the milk soaked napkins.
We can't believe we've seen this movie SO many times, and have never noticed this.
Screw you Kevin's dad.