"Small tease" refers to someone or something that playfully or lightly pokes fun at or teases others in a harmless or amusing way, usually without being mean-spirited or hurtful. Full definition
The impending release of Solo: A Star Wars Story means that we're in the home stretch for small teases of new information in the film's marketing campaign. (cbr.com)
After a number of small teases in previous films, the Guardians and Avengers will have their big crossover moment in 2018's «Avengers: Infinity War.» (chicago.suntimes.com)
Throughout the years, Marvel has been planting small teases that Thanos seeks to become even more powerful by hunting down six powerful ingots called Infinity Stones, which would make him a galactic threat. (vox.com)