Watch as Niall Horan explains the words 'sham', 'banjaxed' and 'gammy'

Did anyone else not know what a Jo Maxi was?

Niall Horan has taken a leaf from the book of Soairse Ronan and took it upon himself to school American’s on Irish slang.

The video, filmed for US magazine Vanity Fair, shows the self-proclaimed ‘bogger’ explain the meaning of words such as ‘banjaxed’ and ‘hape’.