“Beware of RealityFucks,” The Professor said. “Sometimes you will have to Travel to multiple Realities at once. You may MeToo with each of them in their own way, perhaps even contradictory ways, in which MeTooing one means MeNotting another. This is known as a RealityFuck, and if there are enough different Realities and enough contradicting MeToos it may lead to Traveler Vertigo.
To avoid this you must somehow find at least one common MeToo for all Realities present. This can be one of the more challenging BoobyTraps, and you may need the assistance of a trained Reality Traveler or Guardian Angel to overcome it.