I have my headphones on and am listening to music loudly. It's warm and my clothes are short, I feel the music and vibe to the sounds. I am engrossed in the flow of the music and so the cock comes completely unexpectedly. I can't react that quickly. I feel a hand, my headphones falling and the penis pressing into my mouth. The deepthroat happens upside down and unplanned. I am a little overwhelmed but mostly surprised but positively. I agree, sit on the stiff penis and it ends with cum riding.