Glasgow nod
n.— «One is why the French captain chose the headbutt line of attack commonly known as the Glasgow Nod (or Kiss) instead of simply lashing out with a fist, as you might have expected.» —“Assault and buttery” The Mercury (Durban, South Africa) July 17, 2006. (source: Double-Tongued Dictionary)
Further reading
How and why do words from one language find their way into another? Vietnamese, for instance, includes lots of words borrowed or adapted from French. Such linguistic mixing often happens when languages brush up against each other and speakers reach...
How and why do words from one language find their way into another? Vietnamese, for instance, includes many words borrowed or adapted from French, a vestige of colonialism. For example, the Vietnamese word for “train station,” ga, comes...