Mark Wahlberg has starred in a hefty number of effects-laden films—‘Transformers,’ anyone?—but the actor remains exceedingly well-known for a single movie prop. We’ll give you a hint: It’s from ‘Boogie Nights.’ It’s large. It’s unwieldy. Fine, it’s the prosthetic man-part that Wahlberg wore for most of the feature, and it’s the only prop he’s ever kept.

Intrigued by the making of said prop, ‘Late Night’ host Seth Meyers couldn’t pass up a chance to ask Wahlberg about it when he appeared on the show last night. Over a decade later, Wahlberg is still baffled by the thing, but he does offer up a little hope for fans of the film who might want to own the thing for themselves. No, really.