What's the deal with all the Hip-Hop songs about plumbing? There's that Chris Brown song, you know, the one that goes:

Is your main on the flow?
If it ain't, lemme know.
If you need, I can plumb it, plumb it
Girl, indeed I can plumb it, plumb it

And now the song by T-Pain about how he's going to "buy you a drain."

What gives?