Yes, that's an 18-year-old Conan O'Brien taking part in some type of strange, semi-nude grass skirt ceremony.
This stunning picture hit the internet late last week, when the Hollywood Reporter's James Hibberd posted it online. It appears to show a young man in a dress handing an ivy wreath to O'Brien and another young man who are clad only in grass skirts. Hibberd didn't explain what might be going on in the photo or where it came from, but he speculated that the pale, ginger-haired young lad in the foreground of the picture is future TBS late night host Conan O'Brien.
The mystery was (partially) solved Tuesday when O'Brien took to his Twitter page and said, "For those of you who are wondering, yes, this is a photo of me at 18."
O'Brien's Tweet didn't shed any light on the origins of the picture, but we assume it's from his time at Harvard. This definitely looks like some weird, homoerotic, Ivy League, secret society thing.