Magis gaudet quam qui Senectam exuit.

Was said of any one shewing his joy by uncommon expressions of hilarity. Literally, he rejoices more than an old man, restored to youth; or, than a cripple, who has recovered his health and the use of his limbs. It seems to have taken its origin, from observing, that serpents, after changing their skins, from being dull and torpid, become extremely active and lively.