Kevin McNulty, one of Grandpa's old friends (and of course, related to Timmy and the McNulty boys), goes through the secret initiation in order to get into the Loyal Order of Wombats. After seeing this, the Rugrats have Dil go through something similar, so he could become one of the ""Big Babies"". In turn, their fathers mimic the Rugrats, on a bet that they could do everything the Rugrats do.
Cast of Rugrats
Elizabeth DailyTommy Pickles (voice)
Kath SouciePhil DeVille / Lil DeVille (voice)
Cheryl ChaseAngelica Pickles (voice)
Joe AlaskeyGrandpa Lou Pickles (voice)
Melanie ChartoffDidi Pickles (voice)
Jack RileyStu Pickles (voice)
Cree SummerSusie Carmichael (voice)
Christine CavanaughChuckie Finster (voice)
Tara StrongDil Pickles (voice)
Dionne QuanKimi Finster (voice)
Tress MacNeilleCharlotte Pickles (voice)
Nancy CartwrightChuckie Finster (voice)
Amanda BynesTaffy
Dom DeLuiseDirector (voice)
Nicole SullivanDebbie / Customer (voice)
Debbie ReynoldsLulu Pickles (voice)
Drake BellDusty (voice)