St. Jerome is a tad slaphappy and humorous in his short book Against Helvidius (Contra Helvidium), probably because he wrote it in a single night.
“Albus… aterve sis, nescio.”
“I don’t know whether you be white or black.”
Expression meaning: “I don’t know you from Adam.”
“Camelum vidimus saltitantem.”
“We’ve seen a camel dance.”
Expression meaning: Seeing something attempted by someone not fitted for it, which makes the results strange and ridiculous.