Headcanon: Twelve and Clara wind up with one of those big drinks that has two straws.
Clara wanted the drink that came inside a coconut, which looked like it would get them both tipsy but would be safe if the TARDIS did the driving. The Doctor, however, proclaimed it boring and insisted they order the Zombie, which came in a skull-shaped bowl. Clara pointed out that it claimed to serve four, and there were two of them. Pshaw, the Doctor said, he never gets drunk on mere alcohol.Â
The Zombie arrived and the waiter set it on fire at their table, which was pretty spectacular, all those blue flames everywhere. They had a great time slurping it down until Clara noticed two things: 1) the skull bowl didn’t look particularly human and 2) it was made from an actual skull. The third thing she noticed was that the Doctor was smashed already.
And that’s where it really got interesting.