During a sex act in the doggystyle
position, use ones hands to give oneself moose horns by first making a fist with thumb and pinky fingers fully extended and placing thumbs on opposite sides of ones head and angling for maximum pinky extension.
Extra credit for mouthing a big moose call and/or not laughing.
Extra, extra credit for negotiating this maneuver in front of a mirror without partner noticing.
When receiving oral sex, tap your pleasurer on the shoulder to get her attention. Then you should touch your thumbs to your head and spread your fingers like moose antlers and make any strange noise. Then, punch her in the face.