Barbara Walters to Michael Buble -- I'd Love to See Your Penis!

Just because she's 83 doesn't mean Barbara Walters doesn't enjoy a good penis every now and then -- and yesterday, she made it clear ... she'd really like to see what Michael Buble's packin'.

Buble appeared on "The View" -- sporting a pair of jeans that featured a padlock on the zipper -- and the ladies WENT WILD for it.

When asked why he rocked the lock, Buble joked, "It's obvious none of you have ever dated an Argentinian."

That's when Barbara jumped in ... "I WANT THE KEY!"

Babs ... you minx.