Tetris Party

7 Tetris pieces are waving their hands outward. They're all sitting in a green blob of goo, and they all have hairpieces. The pieces, clockwise, are: T-shaped, green & smiling; S-shaped, yellow, and frowning; reverse-L-shaped, pink, and smiling; I-shaped, blue, and smiling; L-shaped, orange, and frowning; z-shaped, purple, and smiling; and square-shaped, red, and smiling.