C. J. D.'s Gyro Query Answered

C. J. D. wanted to know who these gyros Toyplayer had fallen in love with were. A friend of mine once said, "Gyro meat is to lamb as particle board is to wood." I believe this video confirms his view:

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I think it is called "gyro" because of the way they turn the cylinder to make the meat, but that's just a guess. Anyway, as you can see from the photo, it's gyro meat, tomatoes, and tzatziki sauce (made from yogurt), with lettuce and onions optional (and eschewed by Toyplayer). All rolled in a pita wrap. What's it called in the UK, by the way?
One other note: the more conservative of my Greek boyfriends in grad school told me that it is important not to confuse the vowels in "tzatziki," as "tzitzaki" means "goat" in Greek, and is used to refer to a woman who can't keep house well. Not that they're sexist or anything.