Tear her arse open.

Billy slowly bent Stacie over the bed, hiking her tiny mini up around her waist and ran his big hands over her tight, smooth arse. "Mmmmm.... so nice..."
Stacie whimpered a little under his touch, enjoying it but still fearful of what lay ahead.
Slowly Billy lost himself in the tight white arse, and began sliding his cock down her arse crack, towards her hole. "Oh god I'm gonna love fucking your arse..."
"What?! I thought you said you'd take it slow! Please!" Stacie looked back fearful now, feeling his cock against her arse, sliding ever closer to her tight hole.
Even as she finished though Billys huge cock reached her arsehole, and his head began pressing inside. Slowly inch by slow inch Billy slid his huge, thick cock deeper inside her, slowly sinking the length of himself deeper. Finally he gripped her small waist with both hands, and pulled stacie back against his cock, even ashe slammed forward, burying the rest of himself inside her until her arse cheeks slapped against his hips. "Fuck YEAH!"
"NO! Oh god... it hurts... so... much... please... take it out! Your... too... big!" Stacie gasped, her eyes tearing up at the incredible pain of all 11 inches deep inside her. "I... I cant take it!"