No toddler has ever precipitated more mayhem then these five insouciant sheep, now stopping at the quaint ``Tiddley Wink Tea Shop,'' which is run by an unsuspecting cat. They don't understand the menu, and when ``Sheep get soup. Sheep scoop. Sheep slurp. Sheep burp.'' With the inadvertent addition of pepper, bad manners give way to pure slapstick--adroitly chronicled in Apple's comical, ingenuous illustrations--until they're turned out to make a delightful discovery: ``Sheep crunch. Sheep munch. The lawn is what they want for lunch.'' A deft, succinct, charming as ever fifth appearance. (Picture book. 2-7)