My best friends sister is bi and has a huge crush on me, we’ve kissed before but not much other than that. All of us were sitting around just bullshitting and my friend said her date had squirted in her bed last night and didn’t warn her and she got soaked. We all laughed and then I said I’ve never squirted and would never do it. So now my friends sister said I bet I can make you squirt easily, we argued back and forth and she said if I can’t make you squirt I’ll be your slave for a month. I thought about it and said fuck it I’ll take that bet, she came over slid my shorts off and had me lay back on the chair and starting teasing my clit until I was about to cum but then stopped and told me to lay face down on the bed. Once I was down she pulled my ass up and starting kissing around my asshole and her wet warm tongue slid in and omg my body shook from the feeling. Her hand started rubbing my clit as her tongue was deep in my ass, I felt the orgasm coming, as I came she held me so I couldn’t get her tongue out and she kept rubbing my clit and as the orgasms built I was getting overstimulated and just let each orgasm hit and once that happened she had squirt after squirt coming from me. Once she stopped I was shaking, my body couldn’t take anymore.