How many loose articles fall into the canopy during that video!
Looks like one was a sandwich and then later a banana peel. Them aerobatics make ya hungry.
On the inverted pass after he rolls inverted and a multitude of junk falls on the canopy it looks like he gives the finger to his wingman. A setup perhaps.
(Not too bad of flying, inverted that low and giving the finger to his wingman during an airshow.
)