Does the following constitute talaaq?
Q: As part of some light-heartedness my brother had the following conversation with his wife:
Him: Who do you like more? Me or your mum
Her: My Mum
They then both laughed
Him: So then go back to your mum
He says his intention was not divorce. His intention was 'go back to to your mum for love.' The statement was made in jest/as a joke.
Would this constitute divorce?