The sexual act of lying down on your back with an erection, and having a little person sit on your dick (vaginally or anally). They then lift their legs up, you grab them by the sides, and spin them around super quickly like a Beyblade.
Example
Person 1: Man, I'm feeling so relaxed. Got a three foot tall hooker last night and gave her a Midget Spinner.
A celebratory act started in the early 70's by oprah and family, where midgets are hunted, and then corraled into small pens where they are forced to perform circus tricks. This form of entertainment is no longer practiced by oprah, but is still enjoyed by the mentally ill, alcoholics, and wealthy housewives