Puck mistakenly put the love juice on Lysander's eyes instead of Demetrius in "A Midsummer Night's Dream." This caused chaos as Lysander falls in love with Helena instead of Hermia.
Oberon told Puck to pour some of the juice on the eyes of Demetrius, that he might love Helena. Puck put it in the eyes of Lysander by mistake. Oberon said to find a guy with Athenian clothing and didn't know there were two of them in the forest so Puck seen Lysander (who wears Athenian clothing) and put it in his eyes.
Oberon told him to. Oberon wanted Puck to anoint Demetrius, but Puck made a mistake and juiced Lysander instead. As he says, "Believe me, King of Shadows, I mistook. Did you not tell me I should know the man by the Athenian garments he had on?"
There's another flower which is an antidote to the love-in-idleness flower, and Puck is instructed to use it on Lysander to correct Puck's mistake.
Puck put the juice of love-in-idleness(a potion from a flower), which makes a sleeping person fall in love with the first person they see when they wake up, into Lysander's eyes.
Puck assumes that Hermia and Lysander are the Athenian couple who are in love and planning to elope. This assumption leads to Puck mistakenly applying magic to the wrong Athenian.
Puck tells Oberon that the Queen is in love with Bottom. Oberon has asked Puck to do this so that he could get even with his wife for not giving him her slave child. He has a laugh at her expense by watching his wife swoon over a man with a donkey head.
Puck uses a magic flower to make Titania fall in love with Bottom, who has been transformed into a donkey by Puck's mischief. This causes a comedic chaos in Shakespeare's "A Midsummer Night's Dream."
The fairy tells Puck that Oberon, the fairy king, is upset with his queen, Titania, because she is spending too much time doting on an Indian prince. Puck is then given a task by the fairy to find a magic flower that when used on someone's eyes, will make them fall in love with the first thing they see.
that he might put the juice into the wrong eyes
Puck thought it was funny because he enjoys causing mischief and chaos. He finds humor in the ridiculousness of the situation, especially because the argument is fueled by the love potion that he mistakenly used on the lovers. Puck's playful nature leads him to find amusement in the lovers' confusion and misunderstandings.
The characters who remain under the love juice power in "A Midsummer Night's Dream" are Demetrius and Helena. Puck mistakenly applies the love potion to Lysander and Demetrius, causing them to fall in love with Helena instead of Hermia.