Warning: This is the sweetest video you'll see all day.

If you have a sibling like this, consider yourself lucky, because this is what family is all about.

During a wrestling match in Indiana, a 4-year-old was in the middle of a bout on the mat when the unthinkable happened. Her opponent took her to the ground, and her little two-year-old brother was not about to sit back and watch.

He came bursting into the frame, shouting, "GET OFF MY SISTER" as he jumped in on the action and began grappling her opponent.

The crowd naturally had a great laugh because it has to be one of the funniest/sweetest things to ever happen at a wrestling event.

Her opponent in the match was a five-year-old boy, so maybe that also made her little brother very angry.

You have to check this out!