Wanking on the sofa with the curtains open

My wife was out last night and is still in bed hungover (it is 1:15 here). I am really horny but she is too hungover for sex just now. She just said 'you will need to help yourself until i feel better baby', so I came downstairs and sat on the sofa and started wanking. It was a bit boring doing it in the dark on my own, so I opened the curtain and am now wanking while people and cars go past the window. I am not sure if they can see anything but it is a big thrill. Probably going to edge like this all afternoon or until my wife shouts down to say she feels better!