Don't press send! That was the message that former NFL head coach Herm Edwards tried to deliver to a bunch of rookies a few years ago. And yet, that message fell on deaf ears when it came to some of those rookies—and athletes as a whole. Seemingly every other day, an athlete sends out a tweet that's in some way offensive and then tries to delete it later. But unfortunately, as this new list from Bleacher Report demonstrates, deleting something from the Internet is virtually impossible. So you'd better start listening to Herm Edwards, guys. Or else...

[via Bleacher Report]