Place chairs in a circle facing inward and have all the girls (or guys) sit down. One guy needs to stand behind each girl. One guy should have an empty chair and he is the Winker.
The winker's job is to wink at one of the girls in the circle. She is to attempt to get out of her seat and sit in the empty chair in front of the winker. The guy behind her MUST be looking at her head (not at the winker) and have his hands by his side. When she tries to leave the chair he quickly reaches and touches her on the shoulder. If he succeeds she stays if not she sits in the winker's chair and then the guy that failed becomes the new winker.
The game just keeps going till everybody gets tired. At least 15 players our needed but an optimal number would be around 30. With larger groups designate more than one winker.