Yes! (That thingy being the frenulum). I heard that rumor when I was a kid back in Argentina. I’m 50 now. Afaik it’s not true. He just have a long tongue.

Edit: from his autobiography:

I was oblivious, for the first thirteen years of my life, that I was endowed with a large oral appendage, my superlong tongue. It really was longer than everyone else's, and I was soon to find out that having a long tongue came in handy with the girls.