Eng. - when one splooges repetivitly in one spot to from a castle of jiz. over time this hardens to form a upsidedown cone much like a stalagmite in a cave. One could enjoy playing with one, having splooge wars, or using it for erotic pleasures with someone from massachusetts.
Damnit my girlfriend left shit on my white castle.
Dude if you were hungry you could have gone to the fridge, i have been working on that for a year.