Credit: Aaron Carter on Instagram Photo: Aaron Carter With Black Eye And Bruised Knuckles

Aaron Carter is sporting a black eye and some bruised knuckles he claims he got from four grown men who were upset that he's performing on New Kids on the Block turf — aka Boston.

Credit: Aaron Carter on Instagram Photo: Aaron Carter is OK

Aaron, who posted some seemingly painful selfies after the fight, told TMZ he was leaving dinner with a friend last night in Boston when a huge guy approached him in the parking lot and yelled: "I heard you’re doing a show here tomorrow. This is the town of the New Kids."

As ridiculous as that sounds, Aaron claims three other guys then jumped out of a gold Chevy Malibu and started beating him down, even landing some shots on the singer's face.

Aaron claims he managed to get in a few shots before the loyal NKOTB fans took off.

He explains, "I think my knuckles might be broken, but that's what they get. People think I'm a pretty little white boy but no way. I think I won. I'm still standing."

Aaron says he's performing as scheduled tonight, and he's not filing a police report because it's "girlie."

But don't worry Aaron fans, the singer says he's OK! He posted another photo (left) and said, "All good..."

Source: TMZ