Green’s Dictionary of Slang

Gorbals kiss n.

a head butt.

2003

Times 1 Feb. 🌐 One in three Londoners has been chatted up while waiting in line, compared with only one in seven Scots. On the other hand, surveys indicate that Scots are more likely to resort to violence while waiting, preferring to bestow a Gorbals kiss than any other sort, to pass the time.