The phrase "little teaser" is an idiomatic expression that refers to something small or insignificant, but which nonetheless has the ability to arouse interest or excitement. It can be used in a variety of contexts, such as describing a minor event or occurrence that generates curiosity and anticipation for something bigger, or referring to a brief glimpse or hint of something more substantial. The phrase is often used in advertising or marketing materials to create buzz around a product or service by offering just enough information to pique the interest of potential customers without revealing all the details upfront.