Otherwise, don't bother. I don't want "accurate", and I don't need mean put-downs. "Lame" is right out.
The best ones are when the target can fall off their chair laughing with them. (Nancy Reagan confessed to that, I believe.)
Who’s the SNL guy that does Joe Biden, Greek sounding surname. He plays it for laughs, his SloJo impersonation is hilariously clueless.