The title is taken from a Liverpool saying, "Off on a vinegar trip," which is applied to a person behaving strangely. Barrie plays Sammy Chester, a pensioner who shocks his daughters and whose cavorting leads to a heart attack. His eldest daughter takes him to live with her, and calls a family conference to decide what is to be done Sammy is far from happy with the arrangements.
| Directing | Brian Mills | Director |
| Writing | Kenneth Cope | Writer |
| Production | Peter Eckersley | Producer |