Their diet seems to be almost exclusively `` Tubby Custard '' mispronounced as PERSON@1 by the characters -LRB- which is created by a ORGANIZATION@1 machine and consumed by sucking through a spiral straw -RRB- and `` Tubby Toast '' -LRB- circular toast with a smiley face on it -RRB- , and they are spectacularly messy eaters .

Their diet is mainly of `` Tubby Tustard '' -LRB- which is sucked through a circular straw -RRB- and `` Tubby Toast '' .
