Someone who has smoked too much cannabis will meet 'gwyndaf', Gwyndaf will appear usually on his white horse while you look pale and sweaty, paranoid and hungry. Also known as hitting a whitey
remember that time in Amsterdam, Gaz hit a proper gwyndaf. I'm sure I seen him leaving on his white horse
Usual goes by the name of kris, someone who excels in all and everything he puts himself too. The king of all sports from mma to snooker
I whooped you pal, I am the real donny piper