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.
"Did you see that selfie of Angela Merkel with that handsomestud Syrian migrant? The old bag was sloshing in her boots!"
when i finish fishing in spanish i will use the fish to fish for fish cuz fishing in spanish is to finish fishing, when the spish go spishing for the fish and the fish go spish.