Although he thinks of himself as worldly, Barney is sometimes extremely naive, believing many lies his mother told him well into adulthood, such as believing that Bob Barker is his father.
Однак інколи Барні може бути дуже наївним, оскільки вірить у брехню, яку роками казала його матір, наприклад, що його батьком є Боб Баркер.