Ivy tried to open her mouth again to beg Anna to stop again, but this time the only word that came out was “Fuuuuccckkkk…” in a long loud moan as every muscle that had been slowly tightening all through this encounter slowly released at once. In the last couple weeks of masturbation Ivy had learned a lot about her body. She’d figured out how to make herself cum harder or faster, and sometimes even several times in a row, depending on her mood. No matter how long she practiced or what toys she bought, she would never make herself cum as hard as Anna’s mouth did. Ivy pulled at the...