People with Asperger syndrome display behavior, interests, and activities that are restricted and repetitive and are sometimes abnormally intense or focused. They may stick to inflexible routines or rituals, move in stereotyped and repetitive ways, or preoccupy themselves with parts of objects.

Children with AS may have an unusually sophisticated vocabulary at a young age and have been colloquially called "little professors", but have difficulty understanding metaphorical language and tend to use language literally.[1] Individuals with AS appear to have particular weaknesses in areas of nonliteral language that include humor, irony, and teasing. They usually understand the cognitive basis of humor but may not enjoy it due to lack of understanding of its intent