Bob is either already talking or about to say something, but Alice wants to playfully silence him. So what does she do? Why, put the finger muzzle over his mouth of course! Like a regular muzzle prevents dogs from opening their mouths, the Finger Muzzle prevents another person from opening his/her mouth by placing... a finger over his/her mouth. It's used by both men and women, but more often than not, it's an intimate gesture. Sometimes, a kiss will follow the gesture. Or it will just be a means for a character to act flirtatious. Examples of Finger Muzzle include: