Overall, this cartoon was good, but could've used some work. In terms of animation for example, (as a little nitpick) there was one time where the colouring/shading of the left robot changed on 0:47. Next time you're making an animation, watch it first, and see if there's any errors. Other than that, I liked nearly all of the animation (including the small part by Freezepark), so good job on that.
However, the plot was lacking. I expected the robots to actually do the drug dealing (either in real-time, or a flashback), but all I got was two robots talking about their job. Sometimes, it's better to show, not tell. Also, there wasn't really any real conclusion to it, just some bomb blowing everyone up. I get that you were on a strict deadline, but that ending was simply lazy.
But, the voices were good (even if it didn't sound robotic), and the improv between the two characters was ok (even if the story was lacking)
In conclusion, keep up the good work, but remember to check the small things, and think twice about the story. ;) (Sorry if this was a long review, but I wanted to get my point out clear.)