Quirky habits, also known as TICS, are behaviors that are repeated frequently and often involuntarily. They can range from mild to severe and can be physical or verbal. Examples of physical TICS include eye blinking, facial grimacing, and shoulder shrugging. Verbal TICS include throat clearing, sniffing, and grunting. Quirky habits can be caused by a variety of factors, including genetics, environmental stressors, and neurological disorders.