Always great fun to watch well known movies with French subtitles.  I believe the above is ” Summer fling, don’t mean a thing.”  But translated, “Love vacation is irrelevant” or “unimportant.”

“Quelles nuits” is when John T does his falsetto “niiiiHIGH….T”

And when the gang “shoo-bop-bop”‘s … in French it is ” shoo-bop-bop.”  They can totally do that.  I seen it at Karaoke night in the village.