Nynia

From memory most of the words are correct but I recall the first line as

"You all know my wee brother, his name is Jock McGraw".

change the word "Servants" to "skivvies". An alternative ending to the third verse has:

The Provost of Glesga he was there Wi' lords and ladies fair.
Our jock went oot and kicked the tin can three mile in the air".

A additional verse is:-

In the middle of the field at Hampden Park the captain said "McGraw"
"If you don't score with this penalty kick we'll never win at a'".
Jock ran like mad and kicked the ba' and it went up like a cork.
The last we saw it was o'er the stand and heading for New York.

This is the version that Robin Hall and Jimmy MacGregor sung.