When giving you a blowjob, most women will begin to come to terms with the actual size of your cock. In their mouth, it feels even bigger than it looks. Many women will forget that they're giving you pleasure and just try to climb aboard at this moment, so you have to keep them focused on what they're doing.

Start her out by using the tip of your cock to bulge out the inside of each cheek. Give it a good push to really accentuate the bulging sensation. Next, have her slide her head deeper and deeper onto the shaft. Most women won't even be able to get 1/3 of the way down before hitting their gag reflex. If you can get them to keep swallowing, once it gets past the gag reflex, they will have actually swallowed the shaft into their throat. The sky's the limit for how far you can go, but be careful and go slow, as you're in very sensitive ground. Try blasting a load deep down her throat. She won't taste a thing.