You can draw me, fire me or fill me in. What am I?

Why this works

This riddle plays on the multiple meanings of the word "blank." First, you can "draw" a blank, which means to fail to remember or think of something. Secondly, "fire" can refer to firing a blank bullet, which means a cartridge without a projectile. Finally, "fill me in" relates to filling in a blank space, such as on a form or in a sentence. Each phrase cleverly highlights a different context in which "blank" is applicable, making it a fun and multifaceted answer!