Imagine if you had a best friend who always shared their toys with you. One day your friend had to leave town for a while, so they let you take care of their favorite toy until they come back. This means you get to play with their toy and take care of it until your friend returns.
Now, in terms of jure uxoris, it's like a special rule that happens when a man marries a woman who already owns land or property. It's like the man becomes the "caretaker" or "guardian" of the woman's property until they're married. This means that if anything happens to the woman or her property, the man can help protect it and take care of it.
So, marrying a woman who owns property can give the man special legal rights and responsibilities. It's like being trusted with your friend's toy and taking care of it for a while.