The second half of an NFL preseason game isn't always the most exciting place to be in the world, so we'll forgive the Metrodome audience on Friday night for getting a little distracted. And collectively losing their mind.

We'll let the tweets tell the story.

And the fans are doing the wave. PRESEASON FOOTBALL!

— Tom Pelissero (@TomPelissero) August 18, 2012

OK, nothing too out of the ordinary here.

Fans at the Dome are doing the wave and some have start to throw their programs when they stand up. Security!

— Judd Zulgad (@1500ESPNJudd) August 18, 2012

Well, that is different.

Now the wave involves fans throwing everything they can get their hands on while doing wave. Bucket of popcorn just hit # Bills employee.

— Tom Pelissero (@TomPelissero) August 18, 2012

Fans are now throwing things from the upper deck at people in lower deck as wave keeps going around. This may not end well.

— Tom Pelissero (@TomPelissero) August 18, 2012

Oh my. I'm not sure if this is a bad thing or just hilarious.

I have never seen this before. Reminds me of game at TCF with snow being thrown during the wave. twitter.com/andersonj/stat…

— Jeff Anderson (@andersonj) August 18, 2012

Picture evidence!

Longest I have ever seen. I'm surprised there's stuff left to throw. RT @ jwright21: @ tompelissero might be the longest wave known to mankind

— Tom Pelissero (@TomPelissero) August 18, 2012

This thing just will not end.

We are now getting an announcement about throwing things at the Dome. This is after fans threw their programs for a good 25 minutes.

— Judd Zulgad (@1500ESPNJudd) August 18, 2012

Let's end this thing with feeling.

P.A. announcer, not Paul Allen, warns crowd about paper airplanes. One guy taunts security, throws it and leaves. # Vikings

— VikingUpdate.com (@VikingUpdate) August 18, 2012

Follow Gregg Rosenthal on Twitter @greggrosenthal.