What do speech bubbles indicate?
Bubbles drawn with dotted lines mean that the character is speaking quietly. Other kinds of bubbles have other uses. If the tail is made up of smaller bubbles, that means that the character is thinking rather than speaking. Rectangular speech bubbles usually mean that the sound is different from the rest.
What is speech bubble meme?
The speech bubble meme involves an image of a person or character with a speech bubble. This speech bubble is open on the top so whatever text is above the speech bubble appears to be what is stated by the person or character.