Hilarious tail-bounce is the order of the day! I was paging through an old Prehistoric Times magazine with an article (as most of them do) on old model kits, and saw this little gem in the background of a motorized walking dinosaur kit's box:

Yes, that is a Tyrannosaurus Rex, supported by its tail, kicking a triceratops onto its side. Just, wow! What more can you say about a thing like that? Here's the full image, as if perhaps the full context of the image will make it less silly. (It will not!)