Heres mine that I thought were pretty funny in retrospect:
Argued once over which is the hardest language to learn.
Argued once over where did “The Simpsons” originate from (I said Tracey Ulman she said the Butterfingers commercial, turns out I was right… go figure"
I’m sure I’ll come up with more later. Anybody else have some good ones?
geez! I had a bunch I was going to list earlier but I forgot them now… dammit!
About wether or not the car was parked right. It got bad enough that I had to go back and repark the car.
On vacation.
It kinda ruined photos of that day for me because everytime I see them, it remined me of how bent out of shape we got over something really stupid.
(online, after having met once, with my ex)
“Your hair’s black.”
“. . .no, it’s brown.”
“No, I remember; it’s black.”
“No…” ::Angel clenches her teeth:: “It’s brown. I am looking at it right now, and it’s my hair, and it’s brown.”
“It’s black. You must have dyed it.”
'Nuff said.
We don’t argue.
Mr. Ujest is nearly impossible to ruffle. It is most irritating. I would love to have just one good screaming match. Just Once. I’m not a hothead, he is just being too reasonable.
However, whilst in a fillibuster discussion over the only real hot button topic we have ( His sister) we some how, in the middle of this discussion, got sidetracked into whether or not Amway was a pyramid scheme and he actually came close to arguing with me.
(He says it isn’t.)
Well this one time when I slept with her sister…
But seriously we have argued over things as silly as the temperature control in the car, which resteraunt to go to etc…
I don’t argue with my SO, we have rational discussions. It is not wise to upset an Aikido blackbelt 
AAAAIIIIEEEEEEEEEEEEEEE!!!
This has reminded me of the one stand-up argument I ever had with my ex.
I maintained that it was perfectly acceptable to go to the corner store for some milk dressed in a shirt and shorts. Her point of view was that it should be “smart casual” dress.
I gave up arguing with her and changed my clothes. That’s when the real screaming started. My clothes didn’t match. After around 30 minutes of screaming at one another, I basically told her to stick it up her clacker and went to get the stupid milk.
LOL
Max 
“Smart casual” to go to the corner to get milk? I’ve gone down there in boxers, sandles and a t-shirt on numerous occasions.
Not in the winter though.
This is why I’m going to remain a bachelor forever. 
It’s known as “the past incident”, and it goes like this:
jjimm: I’d never serve pasta at a dinner party.
mrs jjimm: You snob!
Repeat ad infinitum for 5 hours at a gradually increasing volumes, until one party storms out, goes to the pub, and necks a double vodka.
Our first after we were married–Whether a specific phrase was a predicate nominative or not.
On the honeymoon–Whether Tybalt from Romeo and Juliet was a true “villian” in the classical sense.
It’s known as the pasta incident, I mean.
A classic: Things My Girlfriend and I Have Argued About
We’ve argued about the nature of a Superhero. I can’t even why I disagreed that Batman was a good superhero. I do remember that it had something to do with Angel.
Mrs.Greenback and I, when we were dating, argued over everything. Most likely a result of a combination of a mutual decision of abstinence and dating for 5 years.
We still argue, but not as much. And making up is much more fun once we got married W00T!!
One thing that repeatedly surfaces is what movies she has watched (Mrs.Greenback has a flawed memory when it comes to entertainment. I constantly prod her saying that I could find 3 movies and rotate them over three weeks and she’d never know that she’d be seeing them over.)
I, on the other hand, tend to remember everything so it does get frustrating at times
Why won’t he wear that nice brown shirt? (Because it’s brown.)
Just last night: Whether or not “Dark City” was the proto-Matrix.
It so was.
We have been arguing for about twelve years about “if Sarah was at that party”
She was not. He insists she was. It drives me batty.
Once me and my SO didn’t talk for 4 hours because I jokingly said that I would nudge a shopping cart out of a parking stall with my car.
I used to be much more stressed out and uptight, and she had all sorts of problems because she lived at home. Nuff said there, but still, we used to get in massive fights all the time.
About her friends. About her family. About sex. About my being a stick in the mud, or a snob, or a superior asshole.
Finally I gave up and married her, so everything is fine now.
Mr Cowgirl is pretty unflappable as well. Bless him.
But a previous boyfriend got very, very upset whenever I even threatened to take the lid off a pot of rice while it was cooking. Even approaching the stove with your hand out and a ‘I wonder what’s in that pot’ look in your eye got him riled up.
Oh, don’t be silly, friedo. Us sane women know those convience stores don’t expect very high standards (hence the “no shirt, no shoes” mandate- which it sounds like you lived up to.)
(Not that I’m calling your ex insane, Max.
Well, ok, I am.)