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1.
The act of getting a boner whilst watching someone eat a banana.
dude, remember when Becca was eating a banana at lunch. i seriously thought i was going to get a banoner.
by ashersucks October 26, 2012
 
2.
A dyke that, when presented with sexual opportunity, passes out (due to drunkenness) before any sexual activity can be accomplished
We thought that she would be down for group sex, but she passed out on the couch instead. What a banoner.
by angelboi May 14, 2010