Here, as promised, is The Clash's (Official Wiki MySpace AMG) 1979 take on Stag, a blazing ska version, with a lot bigger instrumentation (love those horns!) than The Rulers' original, which you can find immediately beneath this post.
The lyrics here are yet another reworking of the Stag legend, this time chastising Billy for cheating in "such a small, small game." (Similarly, see Furry Lewis' version, with the "when you lose your money, learn to lose" moral.)
The Clash are kinda legendary, so there are a lot of live videos online, for example on YouTube. Some month when I run out of studio versions of Stag, I'll post nothing but live versions from various people.