Closing Safari Tabs Via Contextual Menu

Does anyone know how to add a "close tab" command to the control click contextual menu in Safari? (or an extension that would provide this feature)
I know that if you control click on the actual tab you get get a different contextual menu that includes the close tab command, but the contextual menu available by clicking on the body of the page does not contain that command. I'm using the track pad on a Macbook Pro and want to be able to close the tab by using the using the trackpad alone without having to shift to the keyboard or move the cursor up to the top of the window to close the tab. Any suggestions would be greatly appreciated. Thx

 

Yes, would be faster for me because it can all be done with taps and gestures, I tend to use just my right hand on trackpad and do as much of my browsing activities from the trackpad as possible , typing CMD+W involves placing left hand on keyboard and correctly positioning it to do the command, sounds like a small thing but takes more time and breaks the flow of the browsing. (And no I'm not left handed.)
Thx for BetterTouchTool suggestion I'll look into that, but I think I would still like to have the option to have close tab as choice on the contextual menu.
Cheers