7.5-tuple-3C:
Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and fifteen great-great-grandparents in common.
My 7.5-tuple-third-cousin is a good person.
by Gerald128 May 15, 2021
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Sesqua-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and seven great-grandparents in common.
My sesqua-second-cousin is a good person.
by Gerald128 May 15, 2021
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when two people realize they've kissed and/or made out with the same person.

addendum: the closeness of the relationship is dependent on the length of time passed between said incidences. Like, if two people "crossed paths" over the course of a week, it would be known as "lip twins." But if it occurred years apart it would be "lip cousins."
"ashley! i can't believe we made out with the same boy!"
"yeah. we're totally lip cousins."
by tengelke May 12, 2012
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Child of their great-grandparent’s half-sibling with the other great-grandparent’s full sibling.
My sesqui-great-cousin-pibling is a good person.
by Hgcloziw November 23, 2019
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