What are two tails?

A two-tailed thing is something that has two ends, just like a ribbon you can tie around your wrist.

Imagine you have a piece of string. If it’s tied in the middle, and both ends go off in opposite directions, one to the left, one to the right, that's what we call two tails. It’s like when you're playing with a dog on a leash: if the dog runs away from you, there are two ends of the leash, one still in your hand, and one far out where the dog is.

Think about a seesaw at the park. When two kids sit on either end, it goes up and down. Each side has its own tail, one going up while the other goes down. If you close your eyes, you can imagine those two tails moving in opposite directions.

If you don’t know what a seesaw is, think of it like this: when you're on a 跷跷板 and someone goes up, you go down. That’s how two tails work, one side moves while the other does the opposite.

So next time you see something with two ends doing opposite things, you’ll know that's what a two-tailed thing is!