In the tomb of Ti at Saqqara, in a mural depicting a battle, there is a hieroglyph comprising a stylised phallus entering an even more stylised vulva. It is an insult that one warrior is hurling at his enemy. Apparently it is usually translated, somewhat primly, as "Come here, you copulator"; in his Scorn: With Added Vitriol (a collection of invective across the ages), Matthew Parris prefers the earthier "Come 'ere, you fucker."
http://www.seiglefamily.com/2008egypt/IMG_4997%20hieroglyphi...