I'm wearing a t-shirt ereneth brought me from South Africa. It has EISH! written on it.

From urbandictionary.com for the non-Saffas on my flist:

Used in South African English and Afrikaans to express exasperation or disbelief. The word was first transliterated from the Xhosa language to Afrikaans, and then into South African English ( Read more... )