Adventure Time, Season 7

[BMO falls out of trash compactor vent into a pile of debris]

Debris:
[spoke] "Who-who's there? Moe?"

BMO:
No, it's only me... BMO.

Debris:
"BMO? Oh, thank goodness. Oh, us so glad you're here."

BMO:
Who are you? Are you a MO too?

Debris:
"Oh, BMO, no, no, no. I am All MOs."

BMO:
All MOs? Uhh... I don't understand.

All MOs:
"Of course not. I'm so sorry. Let me explain." [flashback to an earlier point in time] "Peace had reigned at Moe's wondrous factory for a hundred hundred years. There was a place for every MO, and every MO was in its place. If you wanted a free hug, all you had to do was ask. No-one could say no. It was a rule. Until one fateful day—yesterday—when a mysterious viral signal somehow breached our firewall and was broadcast throughout the factory, instructing all us MOs to do somersaults into the trash compactor all day long..."

BMO:
That's horrible.

All MOs:
"And we've been trapped here all smushed together ever since."

BMO:
That's horrible, too. How... how do we get out?

All MOs:
"Well, that's why we're so glad you're here, BMO. You're the key, the key to escape. Only you can save us now."