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
An invisiboner is a boner that is too small for anyone to notice except the one who has it. Invisiboner is the opposite of micro soft dick.
1. "When I got called up to the front of class, I was worried that everyone would laugh. However I was even more disappointed when no one noticed; That is when I realized my dick is so small that I have an invisiboner."
2. "The stripper grinded on Jim for 20 minutes but thought that he was suffering from a horrible case of erectile dysfunction; Little did she know that he actually was suffering from invisiboner, and was just too small for her to see or feel."
by StonerWithATinyBoner November 16, 2014
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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