What is this "honk honk"? I've seen it lots of places. Might just be baader meinhoff, but I first encountered it in Chicago where aggressive drivers are constantly honking but its commonplace practice to give two loud honks on your car horn coming out of alleyways letting pedestrians know you don't intend to stop and slowly approach but instead are barrel assing out of the alley and don't give a shit if you kill someone.

I asked and it appears to be a Chicago tradition like dibs. Since then I see it online usually accompanying controversial opinions, but I noticed a trend. Its usually also in connection with politically controversial opinions and insider information regarding politically motivated actions taken by government, military, black ops, or other groups where operation security is a concern.

Does it have some kind of special meaning or is it just random and I'm seeing connections where none exist?