I know so many sets of twins (identical and fraternal) that it's not funny. There are the Lockleys in my class, the McMasters in that other class, the Hassalls in 1022 (all identical, except Francis had back surgery so now he's shorter than Meredith by about a foot. idk). Then Jackson in 1014 has a twin sister - the three of us went to primary (elementary) school together. These are only the ones in my year, and I'm sure there are more in other years.
Oh, I forgot. William in my Drama class has an identical twin. Four sets of twins in ~400 boys, wow.