Sickness comes in like a horse and leaves like a snail.
More French Proverbs:
To rob a robber is not robbing.French
A hook's well lost to catch a salmon.
French
A hook's well lost to catch a salmon.
French
The nimblest footman is a false tale.
French
A woman like a horse needs spurs.
French
He that is too much in haste, may stumble on a good road.
French