Untying a tight knot on pants can be a frustrating experience, but there are a few simple steps you can follow to make it easier.
First, try to identify the type of knot you are dealing with. If it is a simple overhand knot, you can usually untie it by pulling on the two loose ends of the knot in opposite directions. If it is a more complicated knot, you may need to use a pair of scissors to cut it apart.