"Your Best Friend" Sped Up is actually...

I've only realised this just now... Thank you comments!
For the people who are not convinced, Toby tweeted & deleted this:
"F.U.N, too, is an acronym.
F is for friends who do stuff together
U is for you and me!
N is for anywhere and anytime at all"
And then Toby replied to his own tweet with this: "@tobyfox Down here in the deep blue sea!"
A screenshot of the tweet can be found here: / this_is_tobys_actual_t...
or here: undertale-science.tumblr.com/p...
Here's the original link: / 666043111089553408