Interesting Idea...
Here's some tips/critiques I'd like to make:
-The Autotune didn't sound that bad. It fit the song.
-Personally, I found the lyrics to be a bit unimaginative... instead of swearing every five or so words, you could try coming up with a witty rhyme! I enjoyed "You can find me at your local Circuit City".
-The beat and melody were acceptable, but I feel like if you added in more variation to both and possibly chose new samples for the kick drum and hi-hats, the song could be improved.
Lastly, I'd like to note that I am fan of hip-hop, so please don't think I'm scoring this somewhat negatively because I'm simply opposed to the genre. On the contrary, I enjoy hip-hop a lot, and I'd just like to see you improve as a musician!
Good luck in your further musical endeavors, sweet21!
6/10, 2/5.