There seems to be an opinion floating that normal law abiding citizens who contribute to society are terrorist sleepers if they get together and pray on a Friday but not if they get together and pray on a Sunday.

The nearest I know to under cover Muslims is a bloke I used to work with who enjoyed a pint and was rather partial to bacon butties. It wasn't so much that he was boutique pick n mix, although he evidently was, but that he could recite a get out clause from The Holy Q'ran that said in the land of the infidel, you can lapse to blend in and be accepted.

Presumably that's how our Christians get to eat pork and prawns, though having never been one, I am not the best suited to say.