The Squeeze is an act where during intercourse with a man and a woman, the woman proceeds to milk your penis by giving the shaft a light squeeze all the way down. Thus mimicking how a cow's udders are milked.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.