foreplay to anal sex
"don't stick it straight in, give me some courtesy fingers!"
by adwardo April 16, 2009
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