The phrase "little teaser" refers to something or someone that gives you a small hint or playful clue about something that is yet to come. Full definition
As you might have guessed — I love shooting little teaser videos where you get a hint of the story but not quite the full version. (martapozzan.com)
Oh... and here's a nice little teaser so be sure to check it out and tell us what you think via our social network channels. (croteam.com)
Hidden away in the app, however, is a new Augmented Reality feature that allows users to scan the Samsung logo or a box of a Samsung product to see a couple of little teasers for the event or the location of the event. (xda-developers.com)