Airlines

So I was on an airline website the other day lookin at the weight of bags you are allowed to take on...well I got thinkin if I am 150lbs and joe blow is 200lbs I should be able to bring another 50lbs with me they put this limit on how much a bag can weigh but they dont put a limit on how much a person can weigh so I can shove all my items in clothes and weigh 300lbs and board the plane...hmm interesting thought eh?