JPlop Goes the Weasel's title is a pun on an English nursery rhyme that is often played by what toy?
Pop Goes the Weasel “Pop! Goes the Weasel” is an English nursery rhyme and singing game. It has a Roud Folk Song Index number of 5249. The jack-in-the-box children’s toy often plays the melody.
Oranges and Lemons "Oranges and Lemons" is a traditional English nursery rhyme and singing game which refers to the bells of several churches, all within or close to the City of London. It is listed in the Roud Folk Song Index as No 13190.