Made something out of nothing, get it? We made something out of nothing
They had nothing in life, so they did all they could to make something out of life.
The way Lil B says “nothing” sounds like “nuttin'.” A lot can result from sex — the feeling of satisfaction from the actual sex itself; and likely the final result being the birth of a child. To reinforce the last point — see line #4 in this verse, in which the homeless character Lil B is playing as states he already has 2 kids.
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