ˌPop Goes the ˈWeasel BrE AmE
an old British song for children: Half a pound of tuppenny rice,/Half a pound of treacle;/That's the way the money goes,/Pop goes the weasel!
POP GOES THE WEASEL
Meaning of POP GOES THE WEASEL in English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012