Harry gave a little moan that was almost a whimper, but of pure pleasure as Draco's digit invaded his privacy in a most wonderful way. He was surprised at how good it felt in an area that was meant for egress, not ingress. And somehow he knew that Draco's cock in the same place would feel even better.
All rational thought was gone, he was all about the pleasure now, his second brain fully engaged and functioning - and quite hard. He wondered what the protocol was, should he take himself in hand while Draco was occupied elsewhere?