And it has nothing do with the New Orleans Saints' defense.
Cooley is now apologizing for a photo he posted on his blog.
The picture shows Cooley's private parts as he's studying the play-book for last Sunday's game.
He was reading in the nude.
Cooley says he didn't look at the photo carefully enough before putting it on the Web site.
He says he didn't mean to offend anyone.
Cooley adds it was an accident and he regrets not closely reviewing his blog.
All that studying must be working for Cooley.
He had a key reception in Sunday's game against the Saints, which gave Washington its first win of the season.