Holy shit, you want me to pick just one line from the best parody movie of all time?!

I guess if I were forced to pick, it would be:
“I am your father’s brother’s nephew’s cousin’s former roommate.”
“So what does that make us?”
“Absolutely nothing.”

Comb the desert. “We ain’t found shit!”

I agree with @ringwraithfish about that being a very hard choice.

…

Nope, can’t decide between (all paraphrased because I mainly remember the German translation)

• “Comb through the desert!” [cut, followed by troopers using a giant comb on the sand]
• The passcode scene
• “Water, water!” “Water, water!” “Oil, oil!” “Roomservice, roomservice!”
• “Didn’t I say only pack what we need for survival?” “But I can’t live without this thing!”
• “Yoghurt! I hate Yoghurt!” [followed by underling offering to change Big Helmet’s breakfast and a rebuke that that wasn’t what he meant]
• “He’s an Asshole, sir.” “I know that, I want to know his surname!” “That is his surname, sir.” [Big Helmet asks who else on the ship is an Asshole and nearly everyone holds up their hand.] “I knew I was surrounded by assholes!”

No more beaming! This time, I’ll walk! opens the door and it’s right there

"I’m not a human, I’m a mog!

Half human, half dog.

I’m my own best friend."

Such a great movie. To add to the list…

It’s Mega Maid, sir. She’s gone from suck to blow.

Light speed is too slow. We’ll have to go right to Ludacris speed.
Ludacris speed?!?
What’s the matter Colonel Sanders? Chicken?

We have gone plaid.

The Space Balls FLAMETHROWER!!!

When will then become now!?

gestures broadly at entire script

Raspberry. There’s only one man who would dare give me the raspberry! Lone Starr!

Love the combing the desert scene.

https://www.youtube.com/watch?v=hD5eqBDPMDg