"Not Nineteen Forever" is the fourth single released by indie rock band The Courteeners.

Taken from their debut studio album St. Jude, it was released on 31 March 2008 on a CD and two 7" singles.

In 2013, it was used by Manchester United to celebrate their 20th Premier League title triumph.

The lyrics concern a conversation between a young man and his older girlfriend, who is disappointed by his wild and hedonistic behaviour that night, and she drives him for 'tea and toast'.

He muses about how she probably wasn't worth chasing before understanding his girlfriend's words.