The new nucleus never sitting in a cell
When he’s say’s he’s “never sitting in a cell”, he means a jail or prison cell.
Cell is also a double entendre for a play on words as in science the nucleus is known as the control center of a cell. He’s saying he’s a new type of nucleus that doesn’t need to be in the center of a cell to control it. Saying his “nucleus” (brain) isn’t in a jail cell; he’s a free thinker.
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