What happens when get an erection and your pants fall down at your hot 6 year old sister's birthday party. Also see; Incest
Mom: who's up for cake?
You: *thinking to self* god i am so horny
Mom: blow out the candles sweety
You: *thinking to self* she can blow out my candle anyday
Then your pants fall down, causing everyone to immediatly stare at your giant pulsating penis, you then proceed to turn this occasion into a partyfuck.