1 definition by OffTheWall

(mah-kin out)

to kiss a partner passionately or what would be considered inappropriately in public (linked with PDA)

similarities to the meaning of making out however mackin' is considered to be early classic American slang
Jane: hey where's Shelley today?

Rachel: totally mackin' out with Martin behind the bleachers

Jane: ew
by OffTheWall February 27, 2012
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