We rarely see movie characters spell out their plans before enacting them, because that would be no fun -- usually they'll just wink, say, "Trust me, I have a plan," and then the movie will reveal the plan through a series of surprising plot twists. However, we suspect that the real reason they don't tell us the plans out front is because, most of the time, they'd sound pretty stupid if you said them out loud.
For instance ...
6 Return of the Jedi -- Luke Puts Together the Worst Escape Plan Imaginable
Return of the Jedi opens with one of the most famous rescue missions ever filmed, as Luke Skywalker and his friends go save a frozen Han Solo from Jabba the Hutt's palace. It's so exciting, you forget how impossibly stupid the plan is.
The first part of Luke's plan (apparently) consists of getting each and every one of his friends captured by Jabba, one by one. First he sends R2-D2 and C-3PO into the palace with a message of negotiation and a peace offering. They are immediately put into servitude -- 3PO assigned as a translator, and R2 put on Jabba's barge.
"We need an extra urinal for long sand-fishing trips."
Next come Leia and Chewbacca: Leia is disguised as a bounty hunter, negotiating a reward for Chewie, who is taken away by Jabba's men. She then manages to unfreeze Han before she's caught and put in a golden bikini.
"Yes, exactly as I planned." -- Leia's brother
Cue Luke, who walks in unarmed to drive a hard bargain for the prisoners. Naturally, he ends up fighting a hideous monster and being captured too. For a moment, it looks as though Luke's luck has run out as he, Han and Chewie are brought out into the desert to be executed by slow digestion. As Han laments, Luke tells him to stick close to him, assuring him that he's "taken care of everything."
"Grrrraaaaaawww." "Jesus Christ, Chewie! Shut up about the fucking medal."
And then, we all know what follows: Luke gets his lightsaber from R2 (smuggled all along!) and Han accidentally bitch-kills Boba Fett as golden bikini-clad Leia strangles both Jabba and an entire generation's hopes of ever having a normal sex life.
Why It Was a Stupid Plan:
There's an old saying that goes, "Any plan where you end up completely unarmed and over a monster pit is a bad plan." But it's not like Luke and the others had a choice, right? The only way to get into Jabba's palace is as a prisoner. Except that while the gang is coming and going, we see one dude just standing there in the background, looking inconspicuous ...
The background check for this job consisted of the "pinky-swear you're not a sleeper agent" test.
Lando F. Calrissian! Lando doesn't come in with a prisoner. He doesn't have to fight a monster, or put on a golden bikini (unfortunately) -- he just puts on a mask and stands in the crowd of aliens that hang out at Jabba's. Why couldn't the others sneak in the way Lando did, get Han and sneak out? Or, alternatively, just go straight to fighting Jabba's guys, which is what they ended up doing in the other plan anyway. Except, this way, they would have their weapons and wouldn't be wearing shackles.