Jashington
I once convinced a girl that there was no W before 1950, I used various statements, like “well think about it, there is no W in the united states of America, and it hardly shows up anywhere in history” she replied “what about George Washington?”
My reply was, they used a J before 1950, as in George Jashington, like a y. and she went on believing this for months. Story credit: Reddit / mutebychoice