<human>:  Is it normal for people to sing when the YMCA is mentioned?
<bot>: Yes, it is normal for people to sing when the YMCA is mentioned. The YMCA was written about in a widely popular song by "The Village People" The Village People's song "YMCA" had an easy to do and very popular dance routine that went with it. The song "YMCA" is extremely well known. So it is normal for people to sing when it is mentioned.