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Verb, transitive: "To splash my boots" is a British army expression meaning to go for a pee in the outdoors (on manoueuvres, etc. when a regular lavatory isn't available.) The action of forceful micturation against a tree or similar tends to cause a splashback onto the boots.
by kilkrazy January 5, 2005
In Australia the act of urinating, male...although some women have been known to uniate while standing.
"...I'm off to splash me boots..."
by paunch-o August 31, 2009