By now you've probably seen the viral "Heat Fan Grandma" videos going around the Internet.

They feature a grandmother yelling at the TV as she watches her Miami Heat play the Indiana Pacers in the NBA playoffs.

They are really funny videos. Here's an example:

But they feel a bit fake to us ... so we're calling shenanigans. We feel like this has Jimmy Kimmel written all over it and we're waiting for him to yell gotcha.

Check out our video above for the four reasons why we think these videos are fake. Here's a hint - they're just too perfect.