Eh, Shaq is tall enough it puts certain, uh, parts right at fist or elbow level. He'd go down pretty quick considering how fast my nephew put me down that one time when he was 4 and took a swing in just the right spot. Squirrel taps can be devastating. And Shaq's presumably pendulous jewels would make an easy target.
He's over 350 lbs. You're not going to knock him over.