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Itchy Nipple Syndrome, abbreviated as INS, refers to the feeling of uncontrollable itchiness in the nipple region.
I've been scratching my boobs all day; I must have INS.
INS by Katykins19 January 16, 2017
Chad: Hey you going to the concert tonight?

Jeff: ins
ins by Sk8erGirl14 October 12, 2008
Itchy Nuts Syndrome. Word derived from living with Matt for seven months and no shaving cream.
"Dude, you got the INS."
INS by Jarrod Rouse February 12, 2006
person1: what'd u get on the test?
person2: ins...
ins by honeybunchesandoats October 18, 2009
Im Not Sorry.
idiot.
Mike- sorry becky but INS....
Becky- Wha?...
Mike- *shakes head* Urban dictionary.
INS by ham ham. March 9, 2008
Chad: Dude i took home a 10 last night

Brad: Dude thats INS
INS by iteeeeezwhatiteeeeeez September 17, 2020