Be honest and admit "forgetting" everything
From Create Your Own Story
You blush at Alexa and say "I'm so sorry, I just forgot what I'm supposed to do." Alexa smiles. "This is weird, but here's how it works. One of us gets the top of the bed, the other the bottom. Since you just had an orgasm I'll say you should be bottom." She stops and waits for you to get into position. "Now here's the fun part. Use your teeth to remove my panties, and then dig your face into my pussy. You have to make me come in ten minutes or you have to be my sex slave for the rest of the night. If you get me to orgasm in under ten I'm all yours! Lastly, your hands are handcuffed behind your back so it's all with your mouth. Sound good?"
"Hell yea!" you scream to her. The two of you set up in position and the timer begins to click. With no time to lose you bury your face onto Alexa's red panties. You easily use your teeth to remove them and you can hear your friend giggling with excitement. When your tongue reaches her vagina she shudders and touches your brown hair. While you try to get your tongue deeper, she plays with your hair and mutters random phrases like "Ohhhh Leannnnaaaa...." "You were never this good!" and "Oi! Keep going!". You look up at the timer and it reads 7:43. You still have time you think to yourself.
She pushes your head forward and you can tell she's getting close. "Leanna don't stop!" She screams. You bury your face harder and in seconds you feel Alexa's orgasm fall all over your face. You continue to lick her until she says "Thanks girlie. That's enough." She drops the grip on your hair and you look up. "Good?" you ask. "Amazing! And in less then 10 minutes.. so I guess that means I'm yours for the night... if you still want to go that is."
Maybe you have had enough...: