Hot Jurassic Jungle love. 
Unfortunately, T-rex was from the Cretaceous era.
Dino artist William Stout once depicted Brontosaurs having sex, but this is the first I’ve seen of T. Rex sex.
The movie Caveman showed Jack Gilford unwittingly rubbing a T. Rex penis, though. AFAIK, it’s the only depiction of dino sex organs in a movie.
“Did the earth move for you?”
“Every move you make. . .
Every step you take. . . .”
Once you try Y-Rex, everything else are rejects. 
I’ve seen dino sex art before, although most is much cruder. As far as Tyrannosaurus Rex sex goes, it always makes me think of the dragon from Roadmarks that had a crush on a Rex; “Not much of a brain, but what a body !”.
I hope this isn’t impolite to ask, but how did they possibly clean up the post-coital fluids with those little arms?
I don’t think they cared aout that. But it DOES explain why T. Rex didn’t masturbate very much.
No wonder that T. Rex was so happy in Caveman.
“Gentlemen, we desperately need to generate publicity for our dinosaur exhibit.”
mmm Hot Love, spread the word, Telegram Sam.
Who has to sleep on the wet pond?
Ha! As usual, more traditional sources of knowledge, such as this museum, lag years behind Cecil’s exploration of the issue: How did Dinosaurs have sex?
I look at that, and running through my head is the line from the ads for Meet the Robinsons, where the T. Rex is roaring:
“I have a Big Head and Little Arms!”