An Atlanta Python is a gargantuan penis both in length and width (averaging from 14" to 20+ in length) that has the texture and pattern of the python snake. This condition is more common in Atlanta due to the high population of African-American people in Atlanta.
Girl1: "I slept with Jerome last night and it turns out he has an Atlanta Python."
Girl2: "Damn girl, you a lucky bitch, I only get Tod's tiny white dick."