he didn't let me in, so, after i cut him off to get over, i gave the fucker my courtesy finger
a gesture that occurs after a driver, indicator flashing, is not given proper room to change lanes, and must forcibly wedge his car into the desired lane
"he didn't let me in, so, after i cut him off to get over, i gave the fucker my courtesy finger" What is the definition of "courtesy finger"?