Duppy Weed
Marijuana that is so good, your friends make it disappear in the night. Ghostly actions happened to your dope! Rasta reference emulated into word.
First Stoner: "Hey man, where's that great smoke from last night?" "What kind was dat anyway?"
Second Stoner: "Dat was my Duppy Weed!"
Second Stoner: "Dat was my Duppy Weed!"