S1, E5: Tommy and Tallulah offer to do the polishing so that Madame Au Lait can make their favourite fruity trifle. While she is out buying the ingredients, the twins go polish crazy, thinking that the more they use, the happier Madame Au Lait will be and the more trifle she will make. The clockhouse is gleaming when Madame Au Lait returns, but when she sets a hoof on the floor, she finds that it is as slippery as an ice rink.