I went into a pet shop and saw a parrot with a red string tied to its left leg and a green string tied to its right leg. I asked what’s with the strings.
The store owner explained that it was a very smart – bilingual – parrot. “If you pull the red string, he speaks French; if you pull the green string, he speaks German.”
I asked, “What happens if I pull both strings at the same time?”
The store owner looked at me over the top of his glasses and said, “He falls off his perch.”