Mr Jones gets on the tube train to go to work. The train pulls out. At the next station, a lady sits next to him, and proceeds to unwrap a large sausage roll, which she intends to eat for breakfast. Mr Jones, suddenly realises that the lady is the ex Mrs Jones who he last saw at their divorce hearing 27 years ago. At the same moment the ex Mrs Jones realises that she is sitting next to her former husband. Mr Jones, seeking to diffuce the tension says "Aha, I see you are still partial to a big juicy sausage in the morning", She fixes him with a steely stare and says "Yes, that is why I left you, all I ever got from you was a chipolata".
Apologies for the lateness of this joke. I've been very busy.