Over the weekend, it was often difficult to determine who was wearing a costume, who was sporting goofy hipster gear and who was just dressing like their own (freaky) selves.

I’m pretty sure that the Alice Cooper, Willie Nelson and Mr. T. get-ups were reasonable facsimiles. But as I was sitting in the guest tent before Rage Against the Machine, this long-haired dude sporting sunglasses, mild facial hair and an all-black ensemble caught my eye. Was that Metallica’s Kirk Hammett?

I nudged Julie, as she thought the same thing. We watched him fumble with the Port-a-Potty door, go, leave and then come back and engage some guy waiting in line — who proceeded to shake his hand and do a little “right on!” gesture. Which perplexed us further. Could that be Kirk? Hanging out with the commoners before joining the fray for Rage?

We still don’t know.