Viral 'Family Feud' Contestant -- Sorry, Steve Harvey... But I'm Not the 'Worst Ever'

The "Family Feud" contestant Steve Harvey ripped for delivering the "worst answer ever" ... says she's positive she's NOT the worst -- although proving it might be difficult.

Sheila Patterson tells TMZ ... her phone's been ringing off the hook since Steve posted a clip of her multiple, hysterical attempts to answer, "What's another way people say mother?"

The clip of Sheila trying to pass off previous answers by changing inflection or adding a Spanish accent has gone viral. She admits she cracked under the pressure of being in front of a live audience.

But as a longtime fan of the show, she insists she's seen much worse responses. We asked her to give us an example ... Sheila drew a blank.

Must be her thing.