Have you read Drunk of the Week this week?
Everyone in the office knows who did it. I have left a clue in the comments, ruling out the following:
Grant Brissey
Christopher Frizzelle
Eric GrandyJen GravesCienna MadridCharles Mudede
Kelly ODan SavageMegan Seling
Lindy West
The guilty party has consented to being embarrassed like this.