Mackerel? Just kidding.
Famous people named Mack:
Football players Mack Herrin, Mack Hill, Mack Flenniken, and Mack Mitchell; composer/lyricist Mack Gordon; songwriter Mack David; actor/comedian Mack Sennett.
Mack is the name of - you guessed it - a truck in Disney/Pixar's Cars.
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