Are these pranks real?

I saw this yesterday and didn't know what to think about it. Then I was watching Around the Horn last night on ESPN and they brought up the Maryland prank. So I guess they are real.

Here is the first one.

Watch Prank War: The Yankee Prankee on CollegeHumor

And the retaliation.

Watch Prank War 7: The Half Million Dollar Shot and more funny videos on CollegeHumor

I think I like the basketball one better.