When you are having sexual intercorse standing up in an upright position and the male partner thrusts the female partner into the air (thus the leaping). Meanwhile, the female partner contorts her arms and hands into various Egyptian hieroglyphic positions (due to the pleasure).
daaayyyyum! we waz fukkin hardxcore an den he thru me inta The Leaping Egyptian an i iz all lyke- "WHUUDAAFUHH!" goood fukkin mane.