He is pretending it is an accidental dick slip, but he is really testing you. Sticking his meat out of the leg of his boxer briefs, it starts to get bigger, longer and thicker.  He is getting hard and his cock is pointing directly at you, begging for attention. Once he sees that you can’t stop staring at it, he will give you the nod and spread his legs a little wider, giving you full access.  As you drop to your knees and open your mouth wide, you both let out a sigh of pleasure.  Now that the testing phase is over, you can both relax and do what comes naturally.  He will have a fag to service his cock and you will be getting a load of his sperm shot directly into your face. A win-win scenario.