‘Yippie’ was the apt ReAction

Question: Which is the only song to which the listeners’ reaction sounded like one of its lines?

And the answer to that question was Chhoti Si Mulaqat Pyaar Ban Gayi, the title track of Chhoti Si Mulaqat (which released in 1967).

By the way, the line in question was Ya Ya Hippi Hippi Ya Ya Ya (and it would not be incorrect to call it the hook of the song).

Hasrat Jaipuri wrote the track, which was composed by Shankar Singh Raghuvanshi and Jaikishan Dayabhai Panchal.

It was rendered by Mohammed Rafi and Asha Bhosle.