Manny's irritating parents, 'Moo-Ma' and 'Moo-Pa', unexpectedly come to stay after Bernard deletes Manny's answerphone messages. Bernard is instantly infuriated by their mere existence, not to mention their annoying quirks and songs, but his patience and Fran's nerves are tested when it's revealed that Manny's letters home have greatly embellished his actual accomplishments in life. Guest stars: Annette Crosbie as Moo-Ma, Sam Kelly as Moo-Pa, and Nick Frost as an answerphone voice.