How to Stick up the Middle Finger in Gta 5?

How do you Put your Middle Finger when Playing GTA 5 on PS4?

If you are in a car, simply cycle through your weapons until you get to unarmed then hold L1, you will then stick your middle finger up. If you are on foot, press L3 and R3 at the same time and this will trigger an action, it is The Bird by default which makes you stick your middle fingers up.