Local to the West Coast of Scotland (especially Glasgow) & having been used since the late 1960's/early 1970's to describe in slang terms, the act of head butting another
individual (see also Malky)
I'm led to
believe that it's also been used in printed stories & rhymes, again locally in the Glasgow/West of scotland area, by the likes of the Glaswegian poet & wordsmith, Liz Lochhead, (who was invited to read some of her work to my schools drama classes, during the
school year 1981 - 82).