Another great experience I've had with my girlfriend was quite the surprise. As it turns out, she can be quite dominant.

Before I'd gone to visit her, I'd encourage her to think of sexy things for us to do. I'm thinking of how I'm going to bring up the topic of watersports, so I'm thinking that if she has any particular fetishes, I'd love to entertain them, and she needn't feel shy to ask that of me.  So, I encouraged her, and really built her up. She claimed she'd thought of some things, so I was excited to see what she had in mind. 

Well, she surprised me with it one day. 

I was sitting on our living room floor, just messing with the remote controls for the TV and DVD player, trying to figure out what does what. She came into our room (we have the top floor to her family's house), slammed the door shut, and locked it. 

I thought, "Oh, great, NOW what's happened?" I thought she'd been in an argument, or something.

She didn't say anything; she just walked over to me, as I looked up at her with my 'Is everything ok?' face. She tugged her shorts down, and I noticed she was hard as a rock; and she said, "Baby, suck me." 

"Oh!" I thought, briefly. But, she didn't give me much time to think. She immediately started to fuck my mouth. As in, putting her hands on the back of my head, and shoving her cock into my throat until I gagged and her balls touched my chin. It was rougher than anything we'd done previously. After a while, she pulled her cock out of my mouth, turned around, and sat on my face. Literally. I'm a strong guy, but bench-pressing someone while they put their full-body weight on my face was a surprising challenge. If one isn't careful, I think they'd hurt their neck. Anyway, she ground her asshole into my mouth for a while, backing me into a corner and just wiping with my lips. Then, she turned around, shoved her cock back into my mouth, fucked my face for a while, then pulled out, pointing her cock at my face. That's when I heard:

"Baby. Open your mouth." 

Now, at that point, I didn't know what to think. She didn't really give me time to think. I thought she was gonna piss in my mouth. I just opened, and looked up at her. 

Then, she spit in my mouth. 

After I swallowed, and she shoved her cock back down my throat until she came, I just thought, 

"Huh. I wasn't expecting that."