When a man cums inside a woman or another man and snorts it out of the vagina and/asshole. He then spits the cum loogy into their partner’s mouth and she/he swallows and then proceeds to throw upon the man’s chest
Said of a female, "sloshing in their boots" or "sloshing in her boots" refers to a state of sexual attraction or arousal so extreme that they're "wet" (i.e., vaginally lubricated) all the way down to their feet.