Sharon Osbourne -- I Lied About My Hoo-Ha ... It's Not as Tight As You Thought

Sharon Osbourne is taking full responsibility for misleading her fans about the tightness of her hoo-ha ... admitting she MADE UP the story about getting vaginal rejuvenation.

Osbourne appeared on "Howard Stern" on Sirius/XM this morning and exposed herself -- saying she was simply messing with Graham Norton when she recently told the BBC talk show host she had a surgical procedure to tighten up her lady junk.

"I made it up just to be flippant," Sharon said ... adding, "How could I do that after I've had so much ill health? Now I'm not gonna start putting scaffolding up my vagina?"