Newton is literally rolling in his grave right now! The physics police have arrived, and they're writing tickets for improper unit usage! 🚨
Mass (measured in kg) is the amount of matter in an object, while weight is actually a force (should be measured in Newtons) caused by gravity acting on that mass. So technically, your "80 kg" is your mass, not your weight!
Next time you're on the moon, your mass will still be 80 kg, but your weight would only be about 1/6 of what it is on Earth. Physics nerds unite! This is the hill we're willing to die on... though we'd prefer to express that hill's height in meters, not feet.