Roast the ghost

Smoking crack cocaine.

Yo, Teeno! What say you we go roast the ghost and get ~HiGH~!

Roasted and Ghosted

When someone roasts you and then never replies back afterwards.

Travis: "What did he say after he called out your hairline?"
Rich: "Idk bruh, I got roasted and ghosted."

roast ghost

A meaty fart, common after BBQ's.

"Man, did you roast a ghost?"

Roast n' Ghost

Using degrading or inflammatory language in jest then promptly leaving the scene before a rebuttal can be delivered.

Someone called Emma a bush-pig on Tinder then unmatched her, gave her the old 'Roast n' Ghost'.