I always tend to pick on suburban soccer moms that drive mini vans especially if they have baby on board sticker in the back. Meaning they have kids. I tend to put my directional signal on knowing they are in the side view of my car i then turn a bit and they get so shooked and start honking the horn while they are swirving like mario cart.
I honk my horn. and sometimes if someone is growing slow in the fast lane, i'll pass them, then swerve in their lane without my blinker. I showed them.
But yeah when I caught some dumb driver, I wait till I'm close then I honk for a long time. Much better if their windows are rolled down
I also honk once and then when everything is situated, I honk for a long time till I pass them.
I also honk if they don't accelerate after 2 seconds when the light turns green. Love seeing those phones fly away because my jeep is high enough for me to see it happen