Sir, A pickle jar might not be opening because of a tight vacuum seal created when the jar was closed, which can be difficult to break without proper grip or technique; this is often why running hot water over the lid can help, as the heat expands the air inside the jar, slightly loosening the seal; if you're still struggling, using a spoon or other utensil to gently pry the lid edge can also help break the seal and allow you to open the jar.
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