They like "Yo Joey you rude"
I'm like "If only you knew I'm only in school for cosmology
That's why I act as lonely as you"

from Joey BADA$$ – World Domination Lyrics on Rap Genius

Meaning

First person explanation.
“What you are calling rude is nothing, I can be ruder. Since my studies focus around the starting and ending of things, I may come off as blunt. As for you calling my bluntness rude, you are rude for calling me rude.”

Third Person reinforcement.
The loneliness is connected with rudeness since they are both in a cosmology class. Cosomolgy studies allow for the understaning of the next person’s rudeness. Concluding that most people calling others rude are pretty lonely and are just as rude.

Cosmology

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