While having sex, you stop and say to the woman; "You have to ask yourself one question. 'Do i feel lucky?'" Then you proceed to bust a load on the woman, either blinding or straight up killing her, then bend forward and blow the extra semen off your weiner like smoke out of the barrel of a pistol. Then walk slowly off into the sunset.
There has only been one recorded case of someone administering a Clint Eastwood. It was Clint Eastwood himself. He was good, she was bad, and it was ugly.