A person's number count of how many people they made out with.
"m" is a reference to the n-count (just the letter next to it) but also stands for "makeout".
Kissing with tongue definitely counts toward the m-count, kisses on the cheek do not.
Kissing someone ON the mouth is subject to personal interpretation (like petting/just the tip may or may not be counted towards the n-count).

The m-count should be (much) higher than the n-count for most people.
He bragged not only about his m-count but also about his n-count.

She thought that her m-count to n-count factor of 5 was perfect.
by ManyMuffin September 28, 2016
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