Last night we invented a new position, and we perfected it this morning. She lies on her back, holds her splayed thighs close to her chest, and puts her calves straight up. Facing the opposite direction, I lie on my stomach with my pelvis slightly raised and straddle her buttocks. My penis needs to be guided inside her vagina upside-down, but the contact is quite snug in spite of the awkward angle. Our bodies are touching only at our genitals. Whence the name that we gave the new position: the fly-by.