My gorgeous best friend Sophia Smith is surely going to let me experiment with tying her up – I’ve been getting all sorts of kinky ideas from the internet, and I soon persuade her to strip down to just her lovely opaque pantyhose and panties. Then I make short work of adding tight ropes to her body, until she’s almost immobilised. Then I get REALLY mean, getting out my terrifying double-cock gag and gagging her tightly with it. She’s humiliated…