Here's how it's signed:
* Start with your dominant hand in a "5" handshape (all fingers extended)
* Place your fingertips on your throat near your Adam's apple
* Drag your fingers down your throat a few times, moving downward in a straight line.
The number of times you drag your fingers down represents how many times something happened.
Example:
Let's say you're telling someone about a trip to the store. You might sign:
* "STORE"
* "GO"
* "AGAIN" (dragging fingers down your throat twice)
This means "I went to the store twice."
Note: This sign is different from the sign for "again" that involves a repeated "C" handshape. That sign is generally used for more abstract meanings of "again" or "another time."
Hope this explanation helps!