How did the legend of Bigfoot originate?

magic Johnson was walking down the street and found a cat in his hat then named it bigfoot and sed it turned intooooooooo...... a monkey!!!!!

it actually was a man that just like named Roberts i think that has a you know a family that has no money he is just a Filmer a roockie Filmer that invented a short film showing a gigantic ape waking in the woods no one knows if Bigfoot is real scientist shows that it might be real because in that early years no one is allowed to see Ape pictures witch make no one make a movie about apes he named the ape Bigfoot in the picture that he showed with a bigfoots foot