French fries in a dream signify a guilty pleasure. The French fry is typically a potato strip, cut into the shape of a julienne but it can also be any type of deep-fried potato strip, or even any type of fry. In dreams, they are often interpreted as an indicator that your body needs an unhealthy intake of calories.
If you’re craving fast food, it could mean that you’re feeling pressure or stressed and need to take care of yourself better. You may not be eating enough vegetables and fruits or other healthy foods on a regular basis. You are feeling guilty about this, and this dreaming about French fries is the way your subconscious is trying to make you feel guilty.