Bout to serve em like subpoenas
A subpoena is an order to appear for a court date (most likely as a result of a crime/alleged crime.) The related party is obliged to bring evidence before a judge. Thus, one would receive a subpoena, attend their court date, and serve their sentence.
Some seem to think that Mack Maine is saying “Serve ‘em like 'Sevenus,’” which is purportedly a combination of Serena and Venus, as in Venus and Serena Williams, the professional tennis players. To commence a point, the ball is “served” to the opposing player’s side of the court; similarly, to “serve” someone is to make them look foolish.
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