IME beginners usually take time to get it. It is not intuitive. I often say to beginners "Think double helix" and Oxford undergrads nod, and once the music starts - mayhem. But it is the only way to telegraph the move without explanations that would cut across what the caller is saying.

It is ironical that learning StW is quite a headache, yet the bark of the willow is rich in salicylic acid - natural asprin (or aspirin if you must).