But twins KARISSA and KRISTINA SHANNON, who made the claim, say Hefner would rather lose his hearing than throw in the towel on sex.
Karissa, 21, said: “He said he would rather have sex than have his hearing. He has hearing aids now and even then he can only hear out of one ear.
“You have to lean down and talk into his good ear for him to understand you.”
A US study has warned that men using sex-drive boosting Viagra were twice as likely to get hearing loss.
This week Hefner's fiancee Crystal Harris, 25, called off their wedding - saying she would not share him with other women.