Little Squirts is a term used to describe young children. UNS is an acronym for 'unaccompanied minors, ' which are children who are traveling without a parent or guardian. TYKES is a slang term for a young child, usually between the ages of two and five. TOTS is another slang term for a young child, usually between the ages of one and three. All three terms, UNS, TYKES, and TOTS, can be used to refer to the same group of children, commonly referred to as Little Squirts.