I yell at people from my car even though they can't hear me.

• don't use turn signals
• brake and start slowing down before signalling
• tailgate
• at an intersection turning left or right from one lane to two or more, don't turn into the proper lane, but choose whatever one they want
• block side roads when waiting at a light
• speed
• don't speed up to highway speed on the on-ramp
• brake on on-ramps
• slow down on the highway before getting onto the off-ramp
• stop before you at a multi-way stop, but indicate for you to go first