L + Ratio + You X - French taunting

The lines "Your mother was a hamster" and "your father smelt of elderberries" are my favorites.
He's saying that your mom was a hoe and your dad was a drunkard since hamsters are very good at reproduction and wine was made of elderberries.

I…never thought of that. When/where was wine made from elderberries and not grapes, though? I know you can make wine from pretty much anything, but still.