when cultivating pot, there is a certain stage near the end of the budding stage wherein you expose the plant to immense heat. In order to protect the leaves from heat, the cannabis emits little white "crystal looking" tricomes that contain enormous portions of THC. This is the definitive step to producing great cannabis. Tricomes are sometimes mistaken for sprinkled crack by uninformed potheads.
it is a euphamism for shame, guilt, maddening consequences; stemming from "A tell tale heart," by Edgar Allen Poe, where in he describes the agony of conscience. The murderer places the victim under the floorboards and drives himself crazy by imagining his heart beating through the wood.
Hey yo, every since I stole that lady's purse I've been having the door in the floor!