Episode P1.9
On reading the script for the third time, Alan realises that if he sees himself through the glass partition walking backwards towards the turnstile wearing something old, something new, something borrowed or something blue then he should be ok to pass through it the other way now.
His old mate Chris Nolly has promised that the next film will be offensively tacky but enjoyable nonsense like Interstellar rather than another of his tedious brain teasers. For one thing, Alan has no need of any more gnomic mnemonic tattoos in delicate regions!