A fork of Rural Dictionary
Three pronged is when you are really, really, really stoned and you feel like your body has turned into three prongs and a tip: the head is the tip, the two arms are each one prong and the two legs morph into one and together make the third prong. A variation is when you have 4 prongs. That is so your cunt can breathe and is not like tutankhamun's grave in the valley of kings.
Dude I'm so three-pronged