It means to get married or commit to a monogamous relationship; probably the two most indicative words for the situation itself, born of a word that can mean "to move downward; sink, or descend," "to subdue," and "to conclude," and a word that means the "opposite of up."
"Man looks like Lester finally had to settle down and give up the player lifestyle...man, and settle isn't wrong!"
To take a quick shower from the waist down to remove any remnants (odor, residue) of a hook up that lingre on ones cock; so the next girl to fuck or suck is unaware you just taxed the shit out of some ass immediately prior to meeting up with her
Andy: That was quick, you showered and your hair isnt even wet?
Me: I just took a Waist Down Shower so your mom doesnt smell your sisters pussy on my cock!
The act in which a male, during 69, ejaculates on his partner's face and then immediately flips her off of his body. He must then immediately grab a handful of glitter (which he had in his hand, pocket, or on the bedside table) and "cast" it into his partner's face. The glitter will adhere to the partner's face, leaving her "under his spell". The male can then, if desired, yell "EXCALIBUR!" at the top of his lungs.
When you're out bar-hopping until the wee hours of the morn moving from a bar that's closing to a later-closing-bar until it's just time to call it a night and bang somebody. Event usually occurs from about 2AM to 4AM.