De corrupti sermonis emendatione, Paris

3. Dictionary : « Gallico (de ou au), to surprise, take napping, or improvided. À proverbial phrase that seems to have been devised either in commendation of the livelinesse, and quicknesse, of the French, whereby they are able to surprise others ; or, as a taxation of their negligence, and carelessenesse, which make them apte to be surprised by others ».