At borrowing cousin german, at repaying son of a whore.
More French Proverbs:
A handsome hostess is bad for the purse.French
To get the chicks one must coax the hen.
French
It is too late to lock the stable door when the horse is stolen.
French
He who waits for a dead man's shoes is in danger of going barefoot.
French
Money is lost only for want of money.
French
After the daughter is married, then come sons-in-law in plenty.
French