The money dance is a cultural tradition at many wedding receptions where guests offer the newlyweds money by clipping it to their dress/suit to dance with them. The custom is to help establish the couple in their new life together, or to show how much they are loved and appreciated.
meaning sea snake, is a song that wedding guests sing and dance to holding hands in a circle around the married couple. Eventually, the dancers will duck under a “bridge” formed by the bride and groom holding hands and standing on chairs facing each other. The goal is to go 'dance' as quickly as possible while circling the room until the music stops.
It's the Mexican Hokey Pokey... yea that's pretty much the best description we've got!