I do not remember anything like this but i will tell you if i hear it
Kurt’s ultimate mic-drop 
By far, my favorite Halo quote also.

A marine made a Craig reference today during a gun fight:
“Who’s Craig now!?”
Another favourite grunt quote:
“Anyone have some human bait, like some potato chips or money???”
The IWHBYD skull rocks.
‘It’s okay for you to make jokes?’
‘Correct.’
Thought I’d try shooting my way out. Mix things up a little - Master Chief to Cortana.
Wort Wort Wort
Runner up: Ahhhhwubadugh
Lol I found the quote! But it was not poop on flowers…lol
The quote was from an elite in Halo 2 when he kills the chief he says
“Further proof of my prowess!”
My stupid little kid brain heard “May he poop on my flowers”
Dang I was dumb…
The Gravemind was the pinnacle of Halo’s writing and dialog.
“If you will not hear the truth, then I will show it to you. There is still time to stop the key from turning, but first, it must be found. You will search one likely spot… and you will search another. Fate had us meet as foes, but this Ring will make us brothers.”
When I was a teenager playing halo 3 on “The covenant” where the Arbiter drove the energy sword into the prophet of Truth I swore he said:
“A**hole you must be silenced…”
However he clearly says “And so… you must be silenced” 
You killed Flipyap! Or Yapflip, was he… It was Yapflip… No, Flipyap is his brother. Don’t tell me I don’t know Flipyap! Flipyap and I went to Nipple Academy together! And now he’s dead. You are not worthy of the food nipple. Make me a sandwich. I have taken a grievousssss wounddddd. Iwhbyd but the dog beat me to you, I think that is how it goes idk.
Buck: …If you date a girl make sure she’s got balls
Rookie: That’s a little g**
I’m starting to realize most of are favorite Halo characters would get banned on 343 Halo waypoint 
“Dear sarge, kicking a** in outer space, wish you were here.”
“I heard that, jacka**”
I heard a marine today on Infinite say “So chief, I guess you CAN stick it after all” after I stuck an elite with a plasma grenade.
- As you will all remember the Halo 2 e3 trailer quote from Cortana:
“Bet ya can’t stick it”
As Chief charged a plasma grenade.
To be honest though I have found so many of those playing the Campaign. 343 really did honour the legacy of the previous games in that regard.
Cortana: ughhh could be possibly make any more noise?
Master Chief: pulls out Rocket Launcher yes
-Halo 2 first mission
For me:
“Were it so easy …”
always comes back to me, like even in general life hah.
Also, for me, Who’s next, I’m ready how bout you. Brute ships, Shipmaster they outnumber us 3 to 1. Then it is an even fight, all cruisers fire at will burn their mongrel hides. For us, the storm has passed the war is over. But let us never forget those who journeyed into the howling dark and did not return. For their decision required courage beyond measure; sacrifice, and unshakable conviction that their fight our fight, was elsewhere. As we start to rebuild, this hillside will remain barren, a memorial to heroes fallen. They ennobled all of us, and they shall not be forgotten. Usually, the good Lord works in mysterious ways. But not today! This here is sixty-six tons of straight up, H-E-spewing dee-vine intervention! If God is love, then you can call me Cupid. Or the other one. When I joined the Corps, we didn’t have any fancy-shmancy tanks. We had sticks! Two sticks, and a rock for the whole platoon - and we had to share the rock! Buck up, boy, you’re one very lucky Marine. Master Chief, you mind telling me what you’re doing on that ship. Sir finishing this fight. So, Johnson, when you gonna tell me how you made it back home in one piece. Sorry, Gunns. It’s classified. Huh! My yoink! Well, you can forget about those adjustments to your A2 scope. door shuts they can’t hear him anymore. and you’re sure as yoink not gettin’ one of the new M7s! gone where they can’t hear him and he can’t hear them anymore. Well, he’s in a particularly fine mood. Maybe Lord Hood didn’t give him an invitation.