J'habite à travers la rivière / I live across the river
Allongé ? Stretched out in the river.
Ah ah! he said, now I'll never forget this, and try and find another way to say it. But how can I say this ? J'habite de l'autre côté de la rivière.
Oh, it's fun to know what happens in people's minds when we say things. I love French!