In Sickness and in Health - Season 3 Episode 4 -

Min and Gwenneth pay Alf another visit,Gwenneth as confused as ever as she mistakes Alf for a doctor and takes her skirt off and,in the pub,mistakes Arthur for an old boyfriend. Back at the house the sisters hold a seance which Winston and his boyfriend use to make Alf believe he is possessed by an evil spirit before faking a conversation with God,who persuades Alf to give the women his bed for the night.