Beast Boy and Robin
The puppet King sent Beast Boy and Robin some puppets that resembled the titans. Robin analyzed the puppets and thought they looked good and that the people that made the tools got the details right. However, Beast Boy seems not to like what he got.

Source: Twitter
Beast peeps inside the puppet’s shorts and makes a face. He tells Robin to speak for himself because he looks better than the puppet and is way taller than what he saw. We know that puppets cannot be the same height as humans, so which size was he talking about? Now you know why the adults found Beast Boy’s statement hilarious.