You pretend to pull something out from behind you and introduce it to Zim. "This is our topic secret model, Lir." He gives you a hard look.
"I don't see anything..." Red chimes in. "Yes well, that's what the enemy will think. Get it?" Zim is intrigued. "How does it work?" Red answers.
"Very well thanks for asking." Zim is confused by his remark. You inform him that there are other invaders behind him. He moves, calling Lir
before heading off. Six months later you receive a call from Earth. Zim appears on the screen catching you and Red completely off guard. He complains.
"Lir isn't very obedient! In fact, he is down right lazy." You snicker at the fact Zim still hasn't figured out Lir isn't real. "Maybe you’re not ordering him order right. Have you tried singing to him?" You and Red break down laughing. Zim isn't
following. "Singing? What do you mean my tallest?" You try to keep a straight face. "He responds best when you sing him his commands."
Zim starts to get it. "Ok? Thank you my tallest, Invader Zim signing off." He hangs up.