The irony of laugh lines, AKA nasolabial folds or marionette lines, is that they're not actually caused by years of laughter or smiling. \"If you sleep on your side or face down, pressure o… Laugh lines are most commonly caused by … … The lines are most visible when a person smiles or laughs which is where the name comes from. Nasolabial folds are a normal part of human anatomy, not a medical condition or a sign of aging. As people age, however, these folds can become deeper and may also sag. Don't sleep on your side. The van dyke goatee beard style is a popular style in recent years. Van Dyke Goatee Beard Style. 1. According to Dr. Arash Akhavan, MD and founder of The Dermatology & Laser Group, these things don't even play a role in the deep folds in the skin, which occur from mid cheek to chin and form parentheses around our lips.