Chris was being Humpty Dumpty and wanted beans. Poi was going through all the different kinds of beans he could have, and he was giving reasons why they were wrong for him;
Poi: What about some baked beans?
Chris: Oh no - they make me farrrrrrrrrrrrrrrr too excited! (so it sounded like 'fart' if you were expecting it).
Anyone else catch it? (the 'joke', not the fart! :o)