...he Simpsons had ever been a normal family, anyway.
Bart was soaping up his cock, now, casually stroking his hard length with slippery fingers, and he grinned lewdly at her. “Ready for round two already, huh Leese?”
Lisa realised with surprise that she was fondling her womanhood, the folds already slippery in anticipation of her brother’s penetration. Then she grinned back, and beckoned him forward with her free hand.
“More than ready. C’mon, stallion, you’ve got a female who needs to be serviced.”
Bart snickered, and stepped forward to press his body flush against hers. Lisa lifted one slim leg to wrap around his hip, and Bart bent his knees just enough for entry. As he straightened, he pushed his hips against her pelvis, so once the full length of his cock was inside her, the pressure of their bodies kept pushing Lisa further up the wall. Once Bart was standing naturally, Lisa was several inches off the ground, supported only by her leg around his body and one arm loosely slung around his shoulders, leaving her completely impaled on his dick.
“God, Bart, it feels like I’m being fucked by a flagpole or something,” Lisa moaned.
“Like that famous history guy said,” Bart snickered, “I have not yet begun to fuck.”
With the noise of the water covering the sound of their bodies slapping toge...