foaming at the mouth
The mouth foams
foam at the mouth meaning, examples, origin, synonyms
Dogs and other animals affected by rabies foam at the mouth while in stupor, which looks like they are in anger. This phenomenon can affect humans also. The earliest usage can be traced to Shakespeare’s Julius Caesar in 1601.
Julius Caesar: Entire Play
CASSIUS But, soft, I pray you: what, did Caesar swound? CASCA He fell down in the market-place, and foamed at mouth, and was speechless.