>Here's a couple. Please share if you have more. Those are one liner. I'd say insults where the person receiving can't reply back.
>
>Here goes.
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>
>Your ideas as so good you should keep them to yourself.
>
>You know what after listening to you I'd say that your school days must have been pretty tough on you. (My favorite)

One I heard in a film recently - I think tops them all. Something like:

"You're so crazy your mother's sorry she slept with you. ... but she needed the money"

Cracked me up :-)