All mouth and no trousers. All talk and no action.
More Spanish Proverbs:
When a fox is in his hole, the smoke fetches him out.Spanish
To take ambition from a soldier, is to rob him of his spurs.
Spanish
If you have nothing better to do, go to bed with your own wife.
Spanish
The secret of two no further will go; the secret of three a hundred will know.
Spanish
Whilst the nurse suckles, we love her; when she is of no further use, she is forgotten.
Spanish
A fast day is the eve of a feast day.
Spanish