A roving cameraman for music site The Dankles spotted a couple of Lollapalooza attendees engaging in some hardcore heavy petting in the front row of a Dog Blood concert, and naturally snapped a photo for posterity.

And then uploaded it to Facebook.

The post quickly became the site's most shared Lollapalooza update, with many followers chiming in to rag on the couple for their pornographic PDA.

"I thought Five Finger Death Punch was on a different stage," snarked one.

The photo was ultimately pulled and replaced with a brief, somewhat apologetic PSA: "Don’t do that shit in the middle of the day with thousands of people around you. Sorry, but also very not sorry."

Say what you will about the act itself, at least this couple didn't bring their kid along.

[screengrab via HyperVocal]