Shropshire and Black Country (UK) slang for going the long way around. Can be meant figuratively or literally. Based on The Wrekin, a large hill. http://en.wikipedia.org/wiki/The_Wrekin#Folklore_and_customs
Sorry I'm late. I got on the wrong bus and it took me round the Wrekin!
The act of completely destroying your friends will to live by verbally insulting them and then going on to further insult on the by taking a photo with your hands, capturing your companions life drain from his face and uttering the final words, "snapwrekt".
Eddie: (to friend who has fallen over) you're such a softy
Friend: that's not what your mother said to me last night
Friend: (Holds up hand shaped as a camera)
Friend: snap wrekt
Eddie: Fuck