When Ed and Eddy fake their own deaths via quicksand while Edd watches and breaks down. Eddy and Edd have a fight about it and Edd walks out, saying that he would rather suffer whatever the kids have planned for them than wander off with "a so-called friend." When Eddy sees that Edd is serious about leaving, he breaks down and cries, admitting that everything was his fault. Edd is so moved by his apology that he decides to come back.
The part of this scene where Edd states that Ed and Eddy are the only two people he cares about, especially when he considers how distant his parents are made out to be in-universe. The fact that he's given up on his parents ever being there for him makes the eyes water.
You may also notice, Edd seems to get even more angry, seeing that while he is yelling at Eddy, Eddy is trying to hold in laughter, not taking him seriously.
Also, when Edd decided to leave Eddy, Ed's words are also tear-jerking. Though, the delivery of Eddy's line is the real clincher, especially with Tony Sampson's great acting.
Ed's anguish is another painful part of the scene. While it's with his usual Cloudcuckoolander-speak, the big lump is desperately trying to keep his best friends from fighting. He literally begs Edd on his knees not to leave them, reminding him that going back to the Cul-de-sac is practically a death sentence, but Edd is just so fed up with Eddy that he disregards Ed's pleas and storms off.
Double D: I'm returning home! Ed:(pleading) But we can't go home, Double D! Edd: I'd rather face my consequences, Ed, than wander aimlessly with a so-calledFRIEND!
Even though it was obvious Ed and Eddy were in no real danger, just watching Double D's reaction to watching his friends drown in the quicksand, and completely breaking down when he believes that his only two friends are dead.
Everyone watching in utter horror as Eddy is brutally beaten up by his older brother and the revelation this is how he's always treated him.
Even Sarah and Kevin, who hate Eddy more than anyone else, feel empathy for him in this scene. When we see Kevin actually order Eddy's brother to lay off him, it's like every mean thing he's ever done is forgiven. (Although at first, Sarah is seen smiling when Eddy's brother is throwing Eddy into his trailer's door, until he uses Eddy to slam Edd into the ground because Edd stood up for the latter to the former, in which she realizes how wrong the beating is.)
The moment is even more heart-wrenching when we remember just how much Kevin hated Eddy and feared Eddy's brother, and now he's sticking up to his fear on the behalf of his mortal enemy. Not even being a Dirty Coward would cut it for him.
Kevin's reaction gets worse since his fear of Eddy's brother meant that he was probably a victim of his abusive tendencies without anyone else knowing. His reaction to learning that Eddy's brother was abusive to Eddy too comes off as him realizing that yes, Eddy's brother beat on him, but Eddy had tolivewith that monster.
After spending the whole movie chasing after them for going too far, this is the moment they realize that when having to put up with a brother like that, is it any wonder Eddy turned out the way he did and end up causing all their misery to begin with?
The reason why Eddy is such a selfish jackass. He wanted to be liked by everyone by making up stuff about his brother and hiding his true, vicious nature as the picture above showed. The cherry on top is Tony Sampson's acting once again.
Just seeing what an Extreme Doormat Eddy becomes when his brother abuses him. The most confident, headstrong of the Eds can only whimper and brokenly smile as he begs his brother to stop. And this movie reveals that this abuse had been going on this kid's entire life.
Edd writing the letter at the beginning. It's much quieter than most scenes in the show.
As he starts trying to describe exactly what happened, Edd suddenly starts using adjectives such as "immoral," "thoughtless," and "hurtful," getting angrier at each word. This could be showing how unbelievably guilty Edd feels about the whole thing...or it might be Edd finally losing his temper with his barely-there parents... or both.
A fridge tear jerker: When Eddy's being beaten up by his brother, Lee immediately screams "What's he doin' to MY man!?" and tries to attack him. Her sisters' response? They hold her back. Normally, the Kankers would immediately attack anyone who lays a finger on "their" men, but in this case, it's clear that even Marie and May know that Eddy's brother would NOT be an easy target. And with the monstrous way he treats other boys, who knows what he'd do to them.
When Edd gets beaten up, both Ed and Marie scream his name in horror. Even Lee is shocked enough to stop trying to attack Eddy's brother.
The moment is mostly downplayed by showing how the kids now consider the Eds to be their friends, but the kids beating up Jonny for attacking the Eds can still count. Jonny thought they still wanted revenge on the Eds so he showed up and tried to be a hero again, but instead he made himself the villain and got beat up for his troubles. If he had arrived five minutes sooner he would have been part of the big group of friends celebrating in the end.
What makes this even more depressing is the fact that out of all the neighborhood kids, Jonny hung out with the Eds the most, being the closest to them in terms of association. In addition, he was also considered the outcast, what with him befriending a piece of wood, and now that the Eds have finally been accepted, Jonny is now considered the only outcast, along with his wooden companion Plank. His Sanity Slippage after the end credits just adds on to the depression, especially when you consider the reason Eddy, along with his two friends, themselves became outcasts.
As this blog post details, there was a deleted scene showing the Eds sitting around their jar of fireflies and each of them confessing a secret. Ed would have admitted that he sometimes thinks Edd and Eddy are only his friends because their names are the same, and he knows that people underestimate him because of his simple-mindedness. Edd would have explained the infamous "dodgeball incident" from his past, which would have possibly tied into what's under his hat. And Eddy? He would have told Ed and Edd more (false) stories about his brother, unable to bring himself to reveal the truth to them.
A particular Youtube comment makes a rather brilliant written assessment of Eddy here:
"The entire movie is a dissection of the character of Eddy. Throughout the series Eddy grows meaner and meaner. Season 1 Eddy is very different from Season 5 Eddy. It's like he was trying to emulate his brother to be cool. When he wasn't getting the desired results he was "tweaking" it until it worked, emulating his brother more and more (like that episode where he kept trying the same scam over and over again with a new paint job each time). However this just resulted in him growing meaner and more hated. It is not until the end of the movie does Eddy realize that people did not hate him because he failed to emulate his brother, they hated him BECAUSE he SUCCESSFULLY emulated his brother who was just a jerk."
details, there was a deleted scene showing the Eds sitting around their jar of fireflies and each of them confessing a secret. Ed would have admitted that he sometimes thinks Edd and Eddy are only his friends because their names are the same, and he knows that people underestimate him because of his simple-mindedness. Edd would have explained the infamous "dodgeball incident" from his past, which would have possibly tied into what's under his hat. And Eddy? He would have told Ed and Edd more (false) stories about his brother, unable to bring himself to reveal the truth to them.