20-15, astronaut dreams
This is a reference to his song 2015 in which he talks about how the year 2015 will be the year of the Squarians. In the song, the hook says:
Look up in the sky and I’ll promise
You’ll see a bunch of L7's
About as high as the heavens.
Astronaut dream is a phrase he uses to describe a far away goal that one wants to achieve. Or a seemingly impossible dream that can’t be reached.
That’s an astronaut dream
To help improve the meaning of these lyrics, visit "Breaking Bad" by XV Lyrics and leave a comment on the lyrics box