When a person's nipples are the same color as their skin. The nipples are said to look almost invisible.
I think she flashed me, she must have invisinips
by BALax January 8, 2007
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When a girl has clear(skin colored) nipples that remain invisible(do not stick out like normal nipples) until licked, sucked or otherwise excited.
"Dam Felicia has invisinips, i had to lick the center of the boob before they appeared"
by Topher LP September 9, 2008
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