pineapple diesel Share definition Flag aka p-diesel that crazy herb... taste like pineapples! yooooo! your boi took a hit of the p-diesel and hurled! he shouldn't hit that shit like that! pineapple diesel by vaguegus May 10, 2005 0 0 Get merch Get the pineapple diesel mug. Buy Now — $32.95 See more merch