Ouch indeed! I had a similar but much less costly lesson recently as well. The saying goes" Photography and alcohol don't mix" ...well, it's true! My wife runs a Retro Dance party every Saturday at the restaurant where she works. DJ, singers etc, real night club vibe. I'm the designated photog. Got a tad buzzed () one week and the next day discovered a cracked UV filter still attached to my Canon 17-55 2.8. Yikes...the lens and my 7D were unscathed but lesson learned.