Is This Guy Actually Storing Jizz In His Foreskin Or What?

Foreskin is this magical, mystical thing, and I wish I had more opportunities to study its many capabilities in real life. As it stands, horned up amateurs on the Internet are the ones teaching me some fun titbits about foreskin, but today's hung, uncut cock is putting something completely new on the table, at least for me. In the video, a guy whips out his hard slug and gently pulls back his foreskin to release a yummy goo dribble. It doesn't look he's blowing his wad at that moment, because there would be more dude juice, right? I THINK that this guy had already cum, and was saving a dollop of Daisy in his foreskin. Is that possible? Is foreskin so tight that it can store liquid? Just imagine all the fun to be had if that's the case!