She sucks my cock

It feels so good, but I want more, so I put my hand on the back of her head and start to guide it downwards.

"What are you doing?" she asks.
"You know what. Just get your mouth around it," I reply, pushing her down onto my crotch. At first my cock bumps against her lips, but eventually she opens them and takes my meat into her mouth, guiding it past her lips inch by inch. The feeling is incredible as her mouth engulfs my rod, her tongue swirling around the tip.
"Suck it," I urge her, and she starts to softly suck the head and the shaft. With my hand gripping her hair, I lift her head up and back down again, my cock sliding past her lips and in and out of her warm, wet mouth, Stacey taking a suck every time it goes back into her mouth.
"Suck it harder," I say, and she does.
"That's it...good girl" I groan, as I push her head down, forcing her to take my cock deeper and deeper into her mouth. After a few thrusts, I feel my cockhead touching the back of her throat, only making my meat throb even more. It's so deep in her throat that Stacey has trouble breathing, and she gags and comes up for air.

"Take a deep breath," I say, and she does. "Now get back down and suck it again," I say, forcing her mouth onto my cock, pushing it past her lips and deep into her throat.

My meat thrusts in and out of her mouth, and the feeling of this hot slutty schoolgirl deepthroating me has my balls tightening, and I know I can't take it much longer.