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1.
Noun -an enlarged and rigid state of the vagina, typically in female sexual excitement.
"Lydia had a vagina boner when checking out Flush Studios.com"
by Saucy_Jack June 24, 2009
 
2.
A boner...for your vagina
"He was so sexy I got a vagina boner."
by Kappa Theta Mu January 23, 2012
 
3.
a transvestite with a boner
Josh and Michael have a vaginaboner.
by tacotacofuckyourob January 08, 2009