Evan Mathis doesn't like the IRS, and he doesn't care how many people know it.

The Eagles offensive lineman, who has proven to be one of the best guards in the league, posted a photo to Instagram on Wednesday of what appears to be him urinating on a sign outside the IRS building.

He tweeted a link to the photo with the note, "Audit this."

Lest anyone think Mathis regretted his decision to urinate (or pretend to urinate) on the IRS sign and post a photo, he made sure to let everyone know that he will not be apologizing.

Mathis' photo was probably the least of the IRS' concerns, however, seeing as the agency has bigger problems to deal with this week.