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?"
And now you know.
