Harmless or nasty?

Kanye West, Kid Cudi & Common riposte to Lady GaGa's Poker Face, I Poke Her Face (snigger, snigger) with the rather lovely line "Get up on this conscious dick" courtesy of Common. I'm no fan of Lady Gaga, but this doesn't sit right. What hope has hip hop got when its supposedly superior, conscious lyricists come up with cheap shots like this????