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2.
The term you use when you use the upper lining of your shorts/underwear/trousers to support your penis so as to conceal your early morning boner.
Used when you want to prevent awkward conversations with your parents/siblings or any other person around you when you wake up!
Jim: man how come you never get caught with a boner by your wife in the morning?

Tom: looks like you are unaware of the secrets of the invisiboner!
by Thebigdaddy February 01, 2013
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1.
The female equivalent of a boner. Called an invisiboner for obvious reasons.
Megan Fox gives a lot of lesbians an invisiboner.
by WhiteLily October 30, 2010
1 0