My slutty sister in law Callie is at it again - this time I come home to find she's let herself into my house uninvited and is playing with herself on the sofa, wearing my underwear. When I confront her about it, her bratty attitude leaves me no choice but to teach her a lesson. Bratty Callie soon finds herself over my lap, getting her bottom spanked - and judging by her yells and complaining, the pants aren't giving her much protection. Callie wriggles and kicks as her bottom is spanked over and over again. And she makes even more fuss when I pull the pants down, and give her a hard bare bottom spanking as well. Callie's perfect booty is soon glowing red as she gets a well deserved spanking. Callie's bratty attitude eventually disappears and she's soon on her knees in front of me, offering to suck my cock if I'll promise to stop spanking her. Eager to save her bottom from any more punishment, Callie is soon giving me the best blowjob she can. Maybe I should let my slutty sister in law come round more often...