Series of Misunderstandings

Intro
The "Series Of Misunderstandings" plot is where at least one person believes something that's wrong and plays on their assumptions on the little bits of knowledge or incorrect information that they're provided on the subject throughout the story. This ultimately leads to them being informed that they were wrong the whole time and they finally understand everything. Their misunderstanding can be aided by Double Entendres, Spacetime Misinterpretation, and the misinformed person simply not being told about what's really going on by anyone.

Plot Sample
Guy comes home late one evening to hear two voices upstairs in his room. They're Hugo and Ava's voices. Guy stops moving for a bit so he can hear what they're saying. The only thing he can hear is a noise that sounds like two people kissing, making Guy believe the two are making out. Ava says "Ooh, that was so much fun, Hugo," having Guy further think they're kissing and possibly recently got done... doin' it. In a fit of anger, Guy leaves his house instead of going upstairs to check if his assumptions are right or not. He goes over to Charlie's house since he's the only friend left he can rely on. He makes the Big Complicated Plan with Charlie that involves him, Charlie, Hugo, Ava, and figuring out what's going on between the two instead of being sane people and simply asking what it is. After the plan fails and the two get busted by Hugo and Ava, Hugo explains that he and Ava were making suckers upstairs for Ava's mom's birthday. When the "two people kissing" sound was made, that was Ava testing one of the suckers. When she said "That was fun," she was talking about making the suckers being fun, not the two fucking and it being fun. Guy feels like a dumbass and understands everything better.