Friends wanted to see how big my dick was, so my girlfriend showed them by giving me a blow job in front of them

Recently, my girlfriend and two of our female friends were over at my place. We were all drinking, playing truth or dare. it started off slow. We all kissed each other. All of the girls showed everybody their boobs. I was down to my underwear.

For one of my turns I chose dare. One of the friends dared me to pull out my dick so they could see how big it was. I pulled my underwear down. At this point, I was standing naked in front of everybody with a nice big hard on. Then gf got on her knees and started blowing me, which was a huge surprise. The two friends were shocked, cause they didn't expect that. I didn't expect it either. It was a nice sloppy blowjob. I lasted for a long time which really impressed the two friends. I was rubbing gf's head as it got more intense.

After a while, I let out a big moan and came in my girlfriend's mouth. She swallowed my load, then stood up and made out with me. At this point my dick was still hard. She grabbed my dick with her hand and said, "This is how big it is." I gave gf a big hug. She is always full of surprises.