Lucy's patience is tested

Adam akwardly bobs his head back and forth while sucking down on his sister's cock. Her taste and size making him struggle a bit as he mainly focuses on the head and sucks a bit too hard.

"Not like that, you nit!" Lucy snapped while smacking the side of his head. "Just because it's a dick doesn't mean you just fucking suck down on it like its a fucking straw. Show some fucking tact. I fucking swear."

Adam eased up and continued moving his head and shyly sucking at her tip only to have Lucy shove her cock down his throat.

"Fucking **** on it, you scared little bitch." Lucy snapped in frustration as she found herself getting utterly annoyed with her brother's antics. "Just do all the things you fantasized about a girl doing to that shrimp little dick you use to have. Because, at the rate you're going, I'm gonna end up using the pathetic little pussy you now have between your legs."