A dream in which you see your underwear falling off means that you are at risk of losing something that you feel protects you. This could be a person you depend on, a source of income, or anything that offers you a sense of security.
Here are some dreams about dropping your underwear and what they might mean
Dream about underwear falling down in public
To see your underwear drop in public in a dream means that there could be something embarrassing you. It could be something you did or something someone did or said about you that left you feeling embarrassed.
What to do: Face your past and make sure you free yourself from all things that might want to drag you down.
Dream about underwear falling down while walking
To see your underwear fall while you walk means that you have a vulnerability that has made it hard for you to move forward in life. You lack security in one area of your life and you know this. It could be that your relationships are ever shaky, your finances are never in order, or that you have a hard time with work or school.
What to do: Get your life in order. Take a break and clear your mind and figure out what you need to do. You might want to get help from friends or family.
Dream about underwear falling down while running
To see your underwear fall while you run means that you have been neglecting the things that matter most to you while running after trivial things. It could be that you have been chasing money at the expense of building and maintaining relationships and friendships, or that you have been neglecting your health in the pursuit of money and material things.
What to do: Make sure you balance your life. Do not prioritize momentary pleasure at the expense of more important things.