Georgia Tennant's dad makes hilarious jibe at David Tennant
Georgia and David Tennant are very comfortable making hilarious jokes at each other's expense, but this time the joke came from David's father-in-law, Peter Davison.MORE: Georgia Tennant's kids just pulled the best April fool's joke on their parentsPosting to her Instagram Stories on Saturday, Georgia reshared a funny snap sent to her by casting director Jennifer Euston, and it showed Peter holding a hilarious sign above hubby David's head.WATCH: Georgia's parents impressive piano talentsWritten on a sheet of white A4 in thick black marker pen were the words, "HE'S NOT THAT SPECIAL" with the "THAT" underlined. Across the top of the image, Jennifer wrote: "Time Lord Humour.