Oh my, it is HOT down here! Or maybe I'm just having a hot flush, either way, please excuse skimpier clothing to normal. Though, it's nothing new. I'm your step-mother and you've seen EVERYTHING before so do try to keep your blushing under control if you can.

Honestly, step-son, you're blushing so much! Are you ... oh, I see. You've developed a little erection. Not to worry, as I say I've seen everything. I won't look, promise.

Though, I could help with that. It would be our little secret. I could help to give you some guidance, after all, step-mother knows best ...