I wasn't sure what he was doing when the hands on my arse cheeks eased them apart, but found out fast as his tongue found my tight sphincter, which tightened instantly at the invasion. He simply pulled his hands further apart and I reluctantly relaxed a little. It felt so dirty, so degrading but, reluctantly I realised, incredibly exciting. Before I could protest the excitement stopped me from saying anything. He only stopped long enough to say,

"One good turn deserves another. I knew you would love having your arse licked, now return the favour."

Having my anus licked was something I would have never dreamt of, but licking a...