I think I might just call it the Spinworthy Heft.
Other suggestions: Anvil, Sledge or Mjolnir.
Edit: Maul, war hammer.
I did/do not see an overt similarity to the Sleipnir, other than the play on the name. I much prefer the shape of the Slapnir.
I think “wrecking ball” would be a great name for an unapologetically heavy yoyo (credit to @Benthrowsyoyo - Yoyo materials OF THE FUTURE - #15 by Benthrowsyoyo)
These are also excellent.
My 2 cents is that I love the name Spinworthy Slapnir and should stay that way.
“Spinworthy Useless”
I kind of like Bludgeon, but thats probably just violent.
The Thunda from Down Unda
why does this look like a taco bell ad?
“Hanging Rock”
I think I like ‘Trusty’.
Maybe.
Great Large Enormous Newyoyo
The thickster
Spinworthy Heckin Chonkasaur XT
Just Chonk.
What about BB (Big Boned).
Image - It’s from Toy Story “Small Fry” short story credits from their fast food restaurant “Poultry Palace” as credit jokes.
Could always call it the “Dangling Participle” aka: DP
Spinworthy Chunkworthy?
Sir. I just don’t get the criticism from anyone that has yet to throw the yoyo?
You have an excellent reputation for exceptional throws.