Okay what does "shamoe" mean?

So I was just recently listening to my favorite song in like the whole world. When I looked up the lyrics it had the word shamoe in it. What does shamoe mean? I mean from what I can infer from the song, I thought it meant some type of prophylactic or material thing. It’s basically like a feel good old g’ type of song. The lyrics are below and so is the video. The word is in the chorus.

here’s a link to the song/video
http://www.youtube.com/watch?v=7LXyn2lQHS0

here’s a link to the lyrics
http://www.urbanlyrics.com/lyrics/biggipp/steppinout.html