Religion

I'm gonna start a rumor.
I'm gonna tell all my friends that I can throw a 150 MPH fastball.
I think a lot of them will believe me.
Not the smart ones, cause they'll know that's ridiculous, but a lot of them will.
In 20 years, my friends will tell their kids that they know someone who once threw a 150 MPH fastball.
And their kids will be like, "Totally! I'm a kid, so I believe everything my parents tell me because they're grown-ups and they know things. That's awesome that that person threw a 150 MPH fastball!"
And then 20 years later those kids, will tell their kids that their grandfather new a person that could throw a 150 MPH fastball.
And those kids will be like "Holy cow! That guy is so athletic and good looking!".
And then those kids will tell their kids.
And those kids will tell their kids.
Eventually people will have no clue who I am or that I ever existed; they'll just KNOW that some person once threw a 150 MPH fastball.
Some people will be like "Wait. I don't really think that's possible. that's like really fast..."
But then everyone else will be like "Don't be so close minded! Everyone knows that she threw a 150 MPH fastball!"
Well guess what.
I can't throw a 150 MPH fastball.

That's religion.