The Bogey Man - Part 1: Matrimonial Misunderstandings
Wallace and Gromit's Grand Adventures - Episode 4: The Bogey Man

Wallace wakes to a nightmare! He has inadvertently proposed to Miss Flitt using a lug nut! There has to be a way out of this problem, but Wallace can't talk to Miss Flitt about it himself because of business reasons. It's all up to Gromit, yet again.