"Freaky Shared Nightmare" is the second episode of the second season of Good Mythical Morning.
Rhett recounts an nightmare he had the night before, in which he (and Link) are in an elevator, while a blonde woman slowly advances toward him. He somehow knew that she was dangerous, but was unable to flee. Just as she reached him in the elevator, he was awoken by his wife screaming. She had woken up screaming from a nightmare in which she was attacked by a blonde woman, and the woman had evidently reached her at the exact same moment in her dream that she reached Rhett in his dream. Link theorizes on what could have caused this. The Wheel of Mythicality entry for this episode was "Intense Eyebrow Workout"