This Frenchie here certainly didn't need reminded of Lagaf. Yes it was a joke, but one that stopped being funny after the first listen. 18 weeks at #1 you said? So it must have stayed about 6 months in the charts. 6 months of being constantly subjected to that atrocity on the radio.
Then he had another stupid hit single the year after, and one year later, it was Jordi's "Dur dur d'etre un bébé" that went on to be even more successful...
We probably got cable TV around that time, and seeing the UK and Euro single charts on MTV was such a relief compared to the French Top 50.