Here in Lebanon, TN (which has a ridiculous amount of twins) I'm friends with a set of identicals in their mid-20s. While sober they deny any psychic link. At a bar one was visiting friends at a far table while I had a conversation with the other one.
She went to the bathroom and her sister returned from wandering, plunked down and finished the point the first was making before her restroom break. This has happened with them more than once and only when they've had a few.
So yes, telepathy DOES exist but seems to depend on variable factors beyond my comprehension.
Require Jack Daniels to be the switchboard operator?