Rule 1: You have to be your current irl self. Rule 2. You have no weapons.

No weapons? I dunno-

What's my goal here, just fighting or...

Just fight him.

"Who would win, you or his skeleton guy?"

"Well if he went full power then he'd give me some trouble"

"But would you lose?"

...

"Nah, I'd win"

How tf would you win though?

Bro he's a skelebone

A magic skeleton you idiot
he's a f**king ghost inhabiting the skeleton of his own dead body, no matter what you do he will bring himself back up.
Also he's a tough skeleton, his bones are as strong as ancient concrete (which is super durable).
Imagine yourself, in your current state irl, punching concrete and then that tall skeleton shaped concrete thing punches your nose super hard?

Me ASF: 926w0n.gif (click to show)

Do you practice any martial arts or are you buff or strong enough to break concrete irl?

I will tear this dude apart with pure adrenaline

Erm what the backflip

Data: I've got some experience fighting skeletons so... bring it on

(Sorry if I don't respond it's late)

Read the title

... Sh*t

I would insult him so much he'd collapse like drybones

He would just grab one of his ribs and stab it through your eye since you tried to insult him.