Supertaten: Pen-blwydd Hapus, Twpsen!

Hap-pea birthday to you, mashed potato and poo. Hap-pea birthday, dear Twpsen, hap-pea birthday to you!'' It''s night at the supermarket and the vegetables are busy baking for a very special someone''s birthday. But who''s going to try to spoil the surprise...?!