I don't think he's terrible, although having said that this is hilarious (from Ghostface Killah: 2nd Annual Top 10 Softest Rappers In The Game) -
3. Mac Miller
If Hobbits rapped this is what they sh!t would sound like. I cant believe niggas actually listen to this toothpaste niggas music yo. Forreal forreal. This dude wrestles kittens yo. Son probably owns a giga pet namsayin. If you slapped this dude it would probably sound like glass breakin. Son celebrated when the wicked witch got the house dropped on her b. Son probably lives in a mushshroom or some sh!t. Somebody needs to pour this milk dud midget muthafucka back into his Aveeno bottle n throw that sh!t into the ocean.