1 definition by Shnooky

Top Definition
A time of prolonged making out. Especially in a public setting.

Can be used as a verb or a noun, interchangeably.

V. - "Come behind the bleachers with me and we can mackfest for the rest of this game."

N. - The mackfest earlier that night left his lips chapped.
by Shnooky April 13, 2008

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