Often, when people in comics yell at the same time, it's to convey a sense of urgency or a group's shared sentiment. It might also be used to add excitement and draw the reader's attention quickly.
Maybe he yells to intimidate villains or show his determination.
I'm not sure there's a direct connection. Maybe it's just a random combination or reference in some obscure context.
It could be that Peter's immaturity showed in a crucial situation. He might have been over - confident and tried something really risky without thinking it through. The Avengers, being more experienced, would be frustrated with his recklessness and thus yell at him. They want him to learn and grow, but his actions might have been too much to tolerate at that moment.
Maybe the boss was frustrated and took it out on the man. As for the kid, perhaps the cat did something to annoy them.
Peter might be very defensive at first. He could argue back, trying to explain his actions. After all, he is a teenager with his own ideas and he may think that the Avengers don't fully understand his perspective.
In cartoons, yell can be a way to draw attention or add intensity to a scene. It could be a character's reaction to a surprise or a means of communicating urgency.
It could be that he's trying to get someone's attention or express his frustration. Sometimes, characters in cartoons yell for all sorts of reasons related to the plot or to create drama.
I'm not sure off the top of my head. Maybe you could rewatch the movie to find out for sure.
In some fanfictions, Snape might yell at Draco because he expects more from him. Draco is from a prominent pure - blood family, and Snape, being strict, wants Draco to uphold certain standards. Maybe Draco made a mistake in potions class, or he showed disrespect towards other students. Snape's yelling could also be a way to protect Draco from getting into more serious trouble in the dangerous Hogwarts environment.
It could be that in the cartoon's storyline, the word 'balls' is a trigger for some kind of action or reaction for the dog. Maybe it's part of a game or a funny situation.