" You look lousy,' he said.
Jace blinked. 'Seems an odd time to start an insult contest, but if you insist, I could probably think up something good.'
'No I mean it. You don't look good.'
'This is from a guy ho has all the sex appeal of a penguin. Look, I realize you may be jealous that the good Lord didn't deal you the same chiseled hand he dealt me, but that's no reason to-'
'I am not trying to insult you.' Simon snapped. "

― Cassandra Clare , City of Fallen Angels (The Mortal Instruments, #4)