Step-sister's Crotch Inspection Leads to a Boner - Katie St Ives

What happened to you little step-brother, did you catch an STD from the skank who lives next door? The way you walk around the house with you hand down your pants scratching yourself one would think you have crabs or something. Has step-mom seen the way you keep scratching your groin? I'm sure she will want to take you to the Doctor if she sees the way you're going at it. Why don't you let me have a look at your crotch? Maybe I can tell if its just a bug bite or something like that. Go ahead, lie down and take your pants off so I can see your crotch. I'm your step sister, I'm not going to do anything weird.