McGregor was a genius
  But now alas he's dead,
Bedazzled by his brilliance
  He quickly lost his head.
He built himself a teleport
  And travelled back in time
To when the Earth was entering
  It's Mesozoic prime.

And there he saw fantastic sights
  Of pre-historic life,
But in his lust for evidence
  To take back to his wife,
He proved himself an idiot
  Like many of his sex
By posing for a selfie with 
  Tyrannosaurus Rex