I nominate three:
Honey Bunny
Sugar Booger
Schmoopy Poopy
Now, now, Coochy-buns, no need to get all stroppy.
My little smoochy-kins!
Awww what’s wrong with my little snugglesome-hugglesome
My sweet stinking corpse lily
Looks like you’ve got a problem with rhyming names there, Liberal.
Looks like kittenlm and I are safe, then. She’s my Linnie The Pooh and I’m her Pauliebear. You folks may vomit when ready. 
I’ve been known to call the missus:
Funky-pie
Butter-butt
Monkey-lips
Frog-lips
Bunion
But maybe that’s not what you meant?
I am an embarrassment to all halves of couples everywhere because of my endearments for my husband.
It started as Pooh, then to Pooh Bear, then to Boo Bear, then to Booberry, and now he’s Ooberry.
Yes, Ooberry.
And yes, it is embarrassing to call him that in public.
awww Liberal what’s wrong my little snuggy buggy snuggle wuggle? Does Does my widdle pookie wookie need a huggy wuggy?
What about Boo Boo Kitty F*ck?
We were “Honey” and “Bunny” for a while. Until I slipped up and called him “Bunny” in front of a motorcycle club.
Now we’re Girl Face and Boy Head. We soooooo suck.
My father calls my mother Fuzzy. She acquired this name after a bad perm. She’s had straight hair for going on 20 years now, but the name has stuck.
And my grandfather calls my grandmother Toots. For some reason, it doesn’t seem offensive like it would if anyone else did that.
scum queen
thunder thighs
cum chugging road whore
Snoogy.
Snoogy-woogy.
Snoogy-pie.
Snoogums.
Snoogilicious.
Snoogus maximus.
La Snoogidorea.
Snoogenhaufen.
And yet she still dates me…
I believe that in the Andy Capp comic strip, he referred to the missus as “pet”. I tried that just once in fun. The sky grew dark, the wind picked up, animals were finding places to hide and my wife turned to me and said “don’t call me that.” Then the skies went back to sun and all was right in my world.
I don’t have the guts to try that again.
Anything other than baby, sweetie, honey, and other basic terms annoy me. I hate diminutives.
Honey Bumpkin is the worst I know. Sickening and contains the word bum in it.
Mercury and I call each other “poop” and “turd.” I’m usually the turd and she’s the poop, the latter being more feminine-sounding. You don’t even want to know how it started, not that I can entirely remember. We tend to mix it up, adding to the names to get variants like “turdbutt” and “poopenstein 3D.”
“Cum-chugging road whore,” though, wins my vote for “Pet Name of the Year.”
I think Wubba was a pretty bad one. My high school boyfriend and I each called each other Wubba.
Then there was snugglemuffins. SO humiliating. When a “friend” and I used to practice a bit of S/M, he would make me use the safeword “snugglemuffins,” because he knew I hated to say it and that I would wait until I absolutely HAD to.
Then my favorite: SWEET MONKEY! That is the best name anyone has ever given me. (With a nod to the Prince of Weasels.)
My husband gets a murderous glint in his eye when I call him “Sweetmeats.”
Sugar.
Just plain Sugar. I think it’s most obnoxious. I hate it. If anyone ever calls me Sugar, the first thing I think of is Flo from that Alice sitcom, complete with snapping bubble gum.
The hubby and I are Tiger and Honeybear
FB