Picking a booger in a dream symbolizes that you are ready to let your true self or at least a part of your true self, shine through for someone (or the world) to see. Dreaming of picking your booger in front of someone means you're trying to make a statement. When observing someone else picking their booger, consider how you feel right after. Feeling good or smiling means you wish to be closer to this person and you wish they would be more comfortable with you. Feeling disgusted at the person who picked a booger may be your subconscious mind reminding you not to judge others quite so harshly.