So this literally just happened to me about an hour ago. Let me set the scene:
The night before my girlfriend tied me up before she went out for a meal; arms behind back, blindfolded, ankles tied and tape gagged. 15 minutes later I text her telling her how I had escaped. She replied with 'how?!' So I jokingly told her how she was bad at tieing and I was great at escaping..
So today just before she sets off to work she looks at me and says 'do you wanna be tied up again?' Obviously I say yes. She ties my wrists in front of me, very tightly with a long silk scarf, she then gags me with 5 strips of white duct tape. Next my ankles are tied with another silk scarf, and I'm blindfolded. Next, she ties a silk scarf over my bound wrists and around my back - attaching my wrists to my stomach, tightly.
She kissed my gagged lips as she left and Locked the door. About half an hour had passed and I was still very well tied. In fact I couldn't see a way out. After about 45 mins I was starting to panic. My breathing was harsh, the blindfold couldn't be slipped off and my wrists were so tightly bound it was unbelievable...