Brother-inlaw and Wife had as a houseguest [ludger] a French girl doing her years residence over here in order to teach English on her return home---she returned home speaking our broad Ayrshire tongue--not much use for a teacher of English!.
When settled in back in France she invited my relations over for a holiday.
BiL bought a record on a visit to the town.
    They sat down to tea in the garden BiL placed record on an empty
    seat next to him--out comes young sister of their friend who then
    sat down on the record which of course broke with a loud noise.
BiL in broad Ayrshire accent "It"s a peety" [it"s a pity]
    young girl turns bright red--older sister rolling on the grass
    laughing.
    When she recovered she explained that her sister thought he had
    said in French "Set a pi-pi" [excuse my French] "It"s a fart".

Not a lyric but a true example of crossed wires.