A black cylinder that screws to the end of any gun, from pistol to massive rifle, and reduces the bang to a soft "fwip" that nobody will hear. This sound is an example of The Coconut Effect. Roger Ebert likened it to a cat sneezing. It's the Rule of Cool: the smooth assassin can make his hit, then melt into the night with nary a sound. The idea of the Hollywood Silencer is so prevalent that real silencers are referred to as "suppressors" to emphasize they do not make weapons completely silent and to distance them from the trope. Examples of Hollywood Silencer include: