Chapter 178 Annie Fucking Oakley:: 8

• But a different thing was going on. Because of the previously mentioned precarious nature of my boxers' fly, my penis was starting to pop free as I humped into my sister's ass.
• I could feel the fabric of my sister's panties tickle the skin of my dick with each press.
• Lucy must have felt it too. She reached back with her hand, stopping our coupling. I thought, once again, that she was drawing the line.