Russian-Death Mower
When you and your partner get on the front lawn fully naked and get into the wheelbarrow position. You then pull their arms behind their back so their face is dragging on the ground. You then insert your genitalia into their genitalia and proceed to spin around like a Beyblade, giving them grass-burn.
I gave Susan the ol' Russian-Death Mower last night. It made her look like a sexy Grinch.