noun: An erection (boner) caused by dance floor arousal. The female proceeds to grind her booty on the genital area of of the man which causes stimulating friction, thus inducing a boner. Doners are an awkward situation for both parties involved and can be reduced by wearing compression shorts or staying off the dance floor. In layman's terms, a doner is a dance boner.
Dude, i totally got a doner while i was dancing with that dime piece. She noticed it too because she punched me when she felt it.