Saturday Night and Sunday Morning

Bill and Ben seem continually too exhausted from life to have sex. Ben insists on having Sunday lunch with his frilly-curtain-loving sister Tina and her boring husband Brian. After discovering David has sneaked a rat into her house a hysterical Tina slaps him, prompting an argument. Bill storms out of the house and drives David off in Ben's van. David reminds her, once they are speeding along that in her haste she has forgotten that she does not in fact drive. At that moment the biker appears beside her and talks her to a safe standstill. He disappears but not before Bill finds a note, apparently from him, giving a telephone number.