What is the french song in Made in Chelsea, Episode 6 played just before they bump into Agne in Cannes?

It's the bit where Spencer, Hugo, Caggie and Millie are mucking around
and walking along the beach, just before Spencer starts talking about
where they're going for dinner and before they spot Agne.
From what I can make out, the lyrics go something like:
"Je chante et....qu'un enfant (qu'un enfant) Je Joue et... qu'un
enfant (qu'un enfant) Je pense.... "
Pretty gappy I know :-s