Here two Marias are acting out a strong interaction. They liken it to the attraction between two individuals with very poor eyesight. Wandering round for ages without spotting each other until almost nose to nose they see each other and form an instant bond. Once together, afraid they won´t find each other again, they cling for dear life.

The electrostatic force is very gender biased, hey next week is gender week. Positive likes negative and negative like positive but no one likes neutral.

Gravity is some sort of hippy utopia everyone is attracted to everyone but especially large ones in reach.

Weak interaction is like those unexplained relationships that must involve some invisible third partner. Nobody knows quite why they are together.