turn signals

Did I miss something at the Secretary of State the last time I took the test to get my driver's license renewed? Was there a memo that said drivers no longer have to use turn signals? Apparently the thing to do now is begin to change lanes, turn on the signal, look, hear a horn, look, and swerve back into your original lane, over compensate and almost take out two or three cars in the process.

People are driving me crazy. Pun intended. This will continue every time I find myself wanting to go to the roof and, oh wait am I telling too much?