gross close

being extremely close to one's family member, sexually speaking of course.
Damn homey, i banged my cousin last night; it was gross close!
by V-Ball April 3, 2006
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gross n close

An seemingly unnattractive tinder match within a 10 mile radius.
"We got ourselves a gross N close!"
by Chinston Wurchill VI August 8, 2017
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