As long as that Mac doesn’t pull up anymore images of Veronica’s Closet, we’re still cool.

Play on Mack and Mac. Duh. The implication is that the computer was used to pull up images of the very attractive model/actress Veronica Webb. Veronica’s Closet’s got nothing to do with it. Unless you’re into fat chicks.
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also a play on Webb and the worldwide web using the mac to surf the web (although since when did Veronica own the internet)