me choreograph something??

so my friend asked me to help him choreograph a dance to knock me down by keri hilson. he asked me because i've taken dance before, but for me, its been awhile. i havent danced since senior year of high school. and plus...i've never choreographed something before. and i've been thinking a lot about it and i wont be working on it till i go home. but if you guys have any ideas, please let me know! lol thanks.

this is the song

http://www.youtube.com/watch?v=FF5Q1jr28PM