They are smiling, dunking, because "no jump shots". The two are having a grand old time and in walks Larry Bird (the Celtics) who says "thanks for the show" (or something along those lines) and walks off with their lunch (championship aspirations).

The two are left staring blankly at one another and say "who was that", which is what I'm sure they both said after the respective series.

If only Kobe too was in that ad.