It seems like you're trying to describe some aspects of the digestive and urinary systems, but there are a few misconceptions. Let’s clarify how these systems work.
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Large Intestine: The large intestine primarily absorbs water and salts from the remaining indigestible food matter and is responsible for forming and storing feces. It does not handle urine.
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Urinary System: Urine is produced by the kidneys, filtered from the blood. It then travels through the ureters to the bladder, where it is stored until it is excreted through the urethra.
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Separation of Systems: The urinary system and the digestive system are separate. The large intestine is not involved in the process of urine formation or filtration. The kidneys filter blood to produce urine, which is then stored in the bladder.
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Opening: The "small hole" you may be referring to could be the urethra, which is separate from the large intestine and is responsible for expelling urine from the body.
If you have any specific questions about the digestive or urinary systems, feel free to ask!