1. While you are fucking your woman doggy style, grab her pigtails.
2. While still on your dick, lift her up from her pigtails and start fucking her at an angle, mid-air, in the same manner as a "wheelie" on a motorcycle, hence the name.
Secunda: what the shit is the wheelie
Prima: where you pick up your girl doing her doggy style and then fuck her at an angle mid-air
Secunda: oh sounds like quite the erotic move
Prima: indeed clark duckington I