I was confronted by a wonderful sight on my way to work. A woman cyclist had the sexiest bum I have ever seen. She was wearing a skin tight pair of black leggings and it was painfully obvious that she had no knickers on underneath.

I was mesmerised, I realised that I had been riding my motorbike at walking pace just so I could gaze at her rear and fantisize at the thought of licking her cunt and arse untill she came over my face.

My lustful thoughts were interupted by a car angrily sounding its horn right behind me. The lady in leggings looked around sharply and guessed straight away why there was a huge queue of traffic behind me.

I smiled guiltily.

"Sorry. I was starstruck by your bum!"

She gave me a very dirty smile and turned the corner thankfully into a quieter road where there was less traffic. She kept turning around to check I was still there and her look definately had a come hither glint to it.

As she pulled up in a West End mews I knew I was going to be late for work. I went to spin the bike around but stopped when I noticed she was holding the door to her office open for me.

I realised my cock was painfully erect when I bumped it against the petrol tank of my bike. My head was swimming with filthy thoughts. I quickly parked my bike and followed her inside.

She took me by the hand with a cheeky smile and led me straight into the disabled toilet. I had a good squeeze of her bum just as we went through the door and she whimpered with pleasure. As the door shut behind me I forgot about locking it and pressed her up against the cold sink and pulled her leggings down to her knees. Her bum was really perfect and I could see she was dripping wet. I started frantically licking her cunt and arsehole, pushing my tongue right up her tight arse and rubbing her mound with my left hand.

She ground her bum against my face moaning loudly, I realised she was trying to say something to me so came up for air, my face slicked with her juices.

"Fuck me please, please" she said.

I stood and pulled down my leather trousers releasing my cock. I teased the entrance to her bum with the glans of my cock and she gasped.

As I eased my cock into her arse I knew we were making too much noise. My worry about whether the door was locked was real in my mind but as I pumped my cock deeper into her arse I knew I could not stop. She started to scream as she came, her arsehole contracting wildly around my cock tipping me over the edge into my own orgasm.

She turned around and kissed me hard on the mouth, then without any fuss pulled her leggings up and went to leave. As she went out of the door she whispered "Give it a minute before you come out" and then was gone.

Riding to work would never be the same again.