Heh, the moslem from work turned out to be a thin skinned bitch who virtually stopped acknowledging me after apparently one mild banter too far.
Always like this with them, they will play the general, approved social game with everyone, nonchalantly on the surface but all their agenda is to keep their status high in this social game and extract what they can do their kin.
Once you make it clear you're not doing this or even worse, them look bad - it's ogre, kaffir.