Only a few days ago my girlfriend of 11 years knew I wanted to play with myself that morning. So she came in from the bathroom and sat on the edge of the bed with just a thong and undone shirt on. She crossed her legs and told me to get my cock out, well, it was so standing to attention and I had to start rubbing.
Half way through she took off her knickers and placed them over my cock and told me to cum in them, with that she got up completely naked and that was it, all cum in her knickers. Very nice.