You've heard it said a million times, and it's true. Moms have the hardest job in the world even with the best behaved kids.

Here is a video the demonstrates on reason mom's job is so tough.

This pesky, yet adorable kid seems to undo everything mom gets done. I'm sure you can identify with this, because it's real typical kid behavior.

I have to give this particular mom a lot of credit for being incredibly patient while the kid is being incredibly persistent!