When a slut is on her knees surrounded by a circle of muscular men (or former pro wrestlers) who jerk off and blow their loads all over her like it's snowing.
Christen waited for the WWE to come to town, then she snuck backstage for a "hulk hogan snow shower".
Having prepared by placing a spaghetti strainer or similar object underneath your bed, you pull out of your sexual partner's mouth just prior to orgasm, hold the spaghetti strainer just above his/her head, and release into it.
"Yea, while getting a blowjob during Legally Blonde 2 last night, I totally gave her an Ethiopian Snowshower."