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.
by Mike P. Grant, Esq. February 07, 2007
foreplay to anal sex
"don't stick it straight in, give me some courtesy fingers!"
by adwardo April 16, 2009