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Madonna performs during her MDNA Tour at The NIA Arena in Birmingham, England, on July 19.
The "Rocket Man" singer has once again fired up his ongoing feud with the controversy-courting pop star, slamming her for her on- and offstage antics while labeling her a "[expletive] fairground stripper."
During an interview with Australian TV show "Sunday Night," John bristled at the mere mention of Madonna's name, saying, "She's such a nightmare. Her career's over."
He didn't stop there, later ranting that "she looks like a [expletive] fairground stripper."
Singer Elton John calls fellow pop star Madonna "a nightmare" who dresses like a "fairground stripper," while Madonna's spokesperson said the singer does not spend her time "trashing other artists."
"If Madonna had any common sense she would have made a record like 'Ray of Light'," he reportedly added, "and stayed away from the dance stuff and just been a great pop singer and make great pop records, which she does brilliantly."
John's beef seemed to stem from Madonna's various digs at Lady Gaga, who is the godmother of his and husband David Furnish's 19-month-old son, Zachary.
In May, Madonna performed a curious mash-up of "Born This Way" and "Express Yourself" that many saw as a sharp jab at Mama Monster.
"[Madonna's] been so horrible to Gaga," John told "Sunday Night."
John's feud with Madge goes back to 2004, when -- while accepting an award onstage -- he accused her of lip-syncing.
He dissed her again earlier this year during an interview with "Good Morning America," in which he offered some advice to Madge as she prepped for her performance at the Super Bowl halftime show.
"Make sure you lip-sync good," he said.
All right, Madge: Your move.