The Y.M.C.A. is a group dance made popular in the late 1970s following the worldwide success of The Village People song of the same name.One of the phases involves moving arms to form the letters Y-M-C-A as they are sung in the chorus:
Y — Arms outstretched and raised upwards.
M — Made by bending the elbows from the ‘Y’ pose so the fingertips meet over the head.
C — Arms extended to the left.
A — Hands held together above head.
The dance originated on Dick Clark’s American Bandstand.