This is the best. Love to watch her get stretched and filled up close. And if he happens to slip out, that's ok. Don't miss a drop when he has finished.
I would definitely want to be lying under my wife when she is in the doggy position and her lover is fucking her and i would look forward to those times when his cock slipped out of my wifes very wet pussy and lands in my mouth for a few good sucks. great stuff!