At a fast food joint called "Boingo Burger", Taffy tells her friend Britannica (working the cash register as an employee) to hold the pickles on her burger, as, as she told Britannica, "I don't like dill pickles". The Rugrats, however, has taken this to mean "I don't like Dil Pickles", because he was the youngest of the Rugrats. As a result, they try to make Dil bigger by putting him in a booster seat and stuffing his pyjamas with napkins. Then, after Taffy calls the Rugrats "sweet" for their effort to make Dil cute, they raid the sundae bar and turn Dil into a sundae (thetvdb.com)