Brutal Scathing Wicked Deep cutting and painful but probably mostly true

In the context of people commenting on witty remarks or answers, "savage" is a slang term used to describe a response that is extremely bold, sharp, or brutally honest, often in a humorous or impressive way. It implies that the person was very direct or cutting in their reply, sometimes with a bit of a ruthless or merciless edge, but in a way that others find clever or amusing.

It means the witty remark was cruel or unkind.

Mean