Check out the Simpsons episode titled “New Kids on the Blecch“
Lisa: You have recruiting ads on TV. Why do you need subliminal messages?
LT. Smash: It’s a three-pronged attack: Subliminal, liminal, and superliminal.
Lisa: Superliminal?
LT. Smash: I’ll show you. (He opens the window and shouts at Lenny and Carl, who are standing on the corner) Hey, you! Join the Navy!
Carl: Uh, yeah, all right.
Lenny: I’m in…
