The man with the second biggest penis in the world has claimed the man with the largest is a cheater.

Largest penis fight

Largest penis fight

Jonah Falcon, 47, said Roberto Esquivel Cabrera - who due to his 18.9 inches of manhood was recently registered as disabled - ''constantly'' stretched his foreskin, the Mirror Online reported.

He also said that Roberto's actual size of his penis is normal underneath and claims doctors believe he could have a normal life if he has surgery - which he has reportedly refused.

Jonah, who caused a security alert at a US airport due to his large bulge, has a whopping 13.5 inches when erect and previously held the title of world's biggest penis.