Between two stools the breech comes to the ground.
More French Proverbs:
What is worth receiving is worth returning.French
He who marries on a rainy day will be happy for the rest of his life.
French
In marriage cheat who can.
French
Counted sheep are eaten by the wolf.
French
The burden tames the beast.
French
There is no flavour in a swallowed morsel.
French