Ok, to start: It was during my army service that I picked up the nickname "Sandwich". Why? Well, I was on guard duty and got relieved by my, errrr... relief (

) before lunch. So as I was walking away I shouted to him (in Hebrew) "Do you want me to make you a sandwich to eat or something?" Now in Hebrew the English word "sandwich" is pronounced "sandvich" - with a "V". But I didn't know that, so I said "sandwich" - with a "W". Another soldier overheard my mis-pronunciation and had a short laugh.

Months later I was transferred to the same platoon as the soldier who had had that laugh.

He recognized me and started to call me "Sandwich" - with a "W" - which is a letter that doesn't exist in Hebrew. Simply put, it's the equivalent of calling me in English "Sandvich".
Anyways, so one of my friends from the army just messaged me on ICQ with a joke. Get this:
A hamburger walks into a bar. The bartender says, "Sorry, we don't serve food here."
I cracked up.
