To sign 'guy', start with your dominant hand in an open '5' handshape. Place your thumb against your forehead. Then, move your hand downward in a smooth arc to tap your thumb against the center of your chest. This is the same sign used for 'man'.
Point to the person, sign 'guy' by moving your thumb from your forehead to your chest, and then sign 'who' while furrowing your eyebrows.
Point to the person, sign 'guy', and then sign 'friend' by hooking your index fingers together twice.
Point to the person, sign 'nice' by sliding your dominant palm over your non-dominant palm, and then sign 'guy'.
Point to the person, sign 'guy' by moving your thumb from your forehead to your chest, and then sign 'who' while furrowing your eyebrows.
Point to the person, sign 'guy', and then sign 'friend' by hooking your index fingers together twice.
Point to the person, sign 'nice' by sliding your dominant palm over your non-dominant palm, and then sign 'guy'.
Yes, in most contexts, the sign for 'man' (moving the thumb from the forehead to the chest) is used to mean 'guy'. In more casual slang, the sign for 'boy' can also be used.
If you are referring to a mixed group of people (like saying 'hey guys'), it is better to use the sign for 'everyone' or 'all of you' rather than the specific male sign.
Historically, male signs in ASL are located near the forehead to represent the brim of a hat that men traditionally wore, while female signs are located near the chin or jawline.
