It has been confirmed (according to Naomi Dryden-Smith) that Colin did write this, his fourth song* composition
Daniel Kelly has covered this (on YouTube)
There is also a recording of Colin himself singing this song on soundcloud.

(Joe, if you want to edit..)
Couple of typos in verse 2:end of line 1 you=your; line 2 skits=skirts;

FOOTNOTE
* Colin composed the tune for his version of “The Ballad of Reading Gaol” (Oscar Wilde)