Disgraced comic Bill Cosby has been gutted by the shocking drowning death of TV son Malcolm-Jamal Warner , and friends fear the tragedy will be the end of him, RadarOnline.com can reveal.

Sources said sex pest Cosby, 88, who's been living in seclusion since his release from prison , is grieving as if he's lost another of his own children. Article continues below advertisement

Bill's Pain Following The Death Article continues below advertisement Article continues below advertisement

"This has hit Bill extremely hard," shared an insider.

"He and Malcolm were very close and spoke all the time. Malcolm called to wish Bill a happy birthday just two weeks ago. Malcolm was like a real-life son to him. Now he's gone, just like his own boy, Ennis."

Cosby's only son was shot and

See Full Page