Betty drudges in the kitchen alone until her friends (including Bimbo and Koko) hold a surprise birthday party for her… which gets rowdy. Betty drudges in the kitchen alone until her friends (including Bimbo and Koko) hold a surprise birthday party for her… which gets rowdy. Betty drudges in the kitchen alone until her friends (including Bimbo and Koko) hold a surprise birthday party for her… which gets rowdy. Betty drudges in the kitchen alone until her friends (including Bimbo and Koko) hold a surprise birthday party for her… which gets rowdy.