Lames I never care for 'em
I'm callin' shots from a lawn chair with a air horn

from Slaughterhouse – On the House Lyrics on Rap Genius

Meaning

Crooked isn’t a fan of lames and he’s a “shotcaller”

Being in a lawn chair with an air horn would be extremely annoying so he’s basically saying he’s a pain in your fucking ass.

He is also saying he was a shot caller on the streets, meaning he was in charge but had other people carry out his actions, as he was the boss.

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