Top definition
The erection of a woman's nipples due to intense sexual arousal.
Ashley's thin bikini top couldn't hide the titty boner she got when she saw Jeff's buff physique.
by Romeo Foxtrot January 22, 2007
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2
Hard Nipples... that's all, just a retard way of saying that.
Do I really need one of these...

"When I slather her body with a stick of margarine she gets titty boners."
by fastcore June 10, 2008
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3
When you're nipples are fully erect.
"Honey are you cold you have titty boners".
by Bruce McAlister March 22, 2017
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