My gf was going down on my in the car tonight and we hit a rough part of the road which made her bounce up and down on my cock more violently than usual. For some reason the extra motion just did it for me and I surprised her when I started to cum.
She pulled back just in time to get a huge messy facial as I blew a huge load all over her lips, eyes, and forehead. It really made a mess of her dress too as what didn't hit her face landed on her top and in her lap the way she jerked back. Good thing we were already on our way home, her dress was pretty much wrecked after that. For a split second I thought she was going to be pissed, but I think it was just such a surprise all we could do was laugh.