...with the most pointed, least punchline-dependent, least hacky line of the night.
"They say that you roast the ones you love, but I don't like you at all, man. I'm just here because it's a real good opportunity for me."
"Actually, you should thank me for participating in this extremely transparent attempt to be more likable in the public eye." And I hope it doesn't work."
That, hack comedians, is how it's done. There is no comeback for this. It just doesn't exist.