Of course

She starts rubbing my labia with her hand and moans satisfied of my wetness. She pushes the dildo deeper into my mouth. It is unpleasant as always at the beginning, but luckily I am experienced enough with the cock of my boyfriend.

She seems surprised and amazed briefly and I notice how she becomes unconcentrated. Slowly she withdraws her pelvis and lets the dildo slip out of my mouth. "What a good little slut you are," she says happily.

Just wait, sis. You'll see who's the stronger one of us, I think in a fighting spirit. Just because I play, does not mean you have the upper hand.

She grabs my face and pulls it up, I'm sitting before her now and just as she wants to give me a kiss I see my chance. I lean forward and shove her down. Quickly I move over her and this time I am the one who grins triumphantly.

Her face looks confused. Apparently she can not really believe what's going on.

I put a hand on her collarbone and let the other slip under the strap-on and enclose her likewise wet pussy with my hand.