Somehow, somewhen, and - frankly - somewhy, Rosie has partially learned Wannabe by the Spice Girls.
"If you wanna be my lather, bip bop bip bop boo."
"If you wanna be my lather, you should have seen da laav."
"If you wanna be my lather, you should have seen the plough."
...
"If you wanna be my lather, bip bop bip bop boo."
"If you wanna be my lather, you should have seen da laav."
"If you wanna be my lather, you should have seen the plough."
...