You have ginger ankles when you are crossed over by a redhead (usually Irish with lots of freckles), but you are the most ghetto person everyone has ever seen.
The invisible, physical force that overcomes interference from other individuals and attracts those with ginger hair to sit together in a crowded room. The more ginger an object is, the stronger the gravitational pull is.
"Jeez, there's a lot of people on the tube this morning, but Ginger Gravity has overcome us all"