College project surprise

“You’re turn to go down on me”, she smiled.
“I can’t wait”, I said eagerly.
As she stood up, I hooked my fingers on her shorts and pulled them down over her hips. As they slid down, to my absolute shock, a massive black dick sprung free. I couldn’t believe my eyes. Right in front of my face was an 8” flaccid penis.
“Well, are you gonna repay them favor? I know you wanna taste that dick. I can see it in your eyes”
The crazy thing is, she wasn’t wrong. I have only ever been with women, but for some reason, all I wanted to do was shove her big dick into my mouth and lick those smooth balls. I didn’t know what was coming over me.
“I’ve never sucked a penis before”, I said timidly.
“It’s okay”, she said assuringly. “I’ll let you know if there’s anything you’re doing wrong”.
Laura put her big hand on the back of my head and gently guided it towards the monster between her legs. I placed my hand at the base of it and slowly put her growing cock into my mouth. She was still semi soft and it was so warm on my tongue. I loved the musky, salty taste. She was uncircumcised so I had to use my tongue to push her foreskin back and free the soft cock tip. I started to bob my head up and down her shaft as she moaned with pleasure.
“Ohh fuck you’re a natural cock sucker”, Laura moaned.
I cupped her balls with my other hand and stroked them as I went to town on her meaty dick. I realized then how much I love sucking cock. I mean it’s just the best. I could taste her pre cum start to leak out, which reminded me of the flavor of my own cum I tasted when we made out. After a little bit of her standing in front of me while I was on my knees she told me to lay down. I did as I was told. She then got on top of me 69 style and dropped her big dick back into my mouth. Instead of sucking my cock, she instead leaned forward and buried her face in my tight virgin ass. I’ve never had my ass eaten out, but oh my did I love it. It wasn’t long before she started sticking fingers up my butt, sliding in and out, mimicking what was to come.