NFL player signs autograph for another NFL player

You remember all those people who freaked out and said they'd NEVER heard of an NFL player asking for another player's autograph? This all came shortly after Jamaal Charles asked Peyton Manning for his autograph.

Well I wonder what they're going to say when they realize Adrian Peterson signed a jersey for Brandon Marshall WHILE STILL ON THE FIELD!!! DO THEY JUST NOT GET IT?!

Here's Marshall doing the same:

Brace Hemmelgarn-USA TODAY Sports

OK, hopefully you can notice that's me feigning outrage over this.