Spontaneous Osteonecrosis of the Knee - SONK. Definition. 1  A condition of unknown aetiology characterized by the development of an area of osteonecrosis on the weight-bearing surface of the medial femoral condyle.  First described by Ahlback in 1968.
Funky Chicken may refer to:  1 Do the Funky Chicken, a 1969 song by Rufus Thomas. 2  The Chicken (dance), a 1960s-era American rhythm and blues dance.  Chicken Dance, an oom-pah song.
The best way to celebrate Chicken Dance Day is by getting out there and doing the Chicken Dance! Itâs quite simple, and it all starts with making a beak with your hands, and âsquawkâ them four times in beat with the music, then you make wings as described earlier, and flap them four times in time with the music.