Mark's general criteria seems to be;
-Is it feminine in a human way?
-Is it giving him a half-lidded flirty look?
-Does it have thick legs?
-Does it look like it will dominate, squeeze or otherwise hurt him?
-Is it phallic/had a phallic protrusion?
-Does it have an obvious opening?

Basically can he make an immature assumption about it, or does it remind him of Lady Dimitrescu?

Markiplier's Smash or Pass simply proved, that he doesn't swing either way. His sexual orientation is more the shotgun-approach.

Remember what Markiplier said Koe:
"It's not a sex thing, it's about power!"

"That would definitely make me a furry, pass" says the one who smashed Lopunny

Fun fact about the "welcome to the furry fandom Markiplier" comment... his brother is actually creator of TwoKinds, one of the more well-known furry webcomics out there.  So, you know...

I think the criteria was mostly "Does this have feminine features? Does this look adult enough? Does this look like a certain type of toys? (Wailord)"

I definitely feel like this was a mixture of "listen to the peepee" and "hey, that'd be funny" just to throw people off more. And by golly did it work.

"AND THERE'S NO ONE ALIVE WHO CAN COMPREHEND MY SEXUAL PREFERENCE." ~ Markiplier probably

I know this has probably been mentioned to death already but Mark's brother Jason, is the author to "Twokinds" which won the Ursa Major Award for Best Anthropomorphic Graphic Story in 2010, 2015, and 2016. Jason doesn't consider himself a furry, just like Mark saying he's not a masochist, I guess denial runs in the bloodline.

"have you searched beedrill? there's one particularly interesting result."

Whoever sent this, apologize to my eyes immediately.

Mark smashing Ditto is the one choice that makes the most sense.
I mean Ditto can transform into anything.... ANYTHING!!

This video made me love Mark so much. He’s so brave lol. And he’s so funny. It just came the heck of out nowhere and it was fantastic

I like how Koefficient tries to understand Mark's fetish

I think the best part about mark’s video is that he ends it with “no I will not take questions and I will not explain myself”
Which just adds fuel to the fire the internet experienced in the wake of this knowledge

"You should give Goodra a chance"
                                                            Koe

Watching Mark breaking koe's mind was a joy.

The fact that Koe didn't understand the cloyster smash leads me to believe he is an innocent soul indeed.

Mark is never innocent he's chaotic

Still can't belive he'd rather smash a bug but gets weary of being a furry on some hahahahaahha

Mark really like bees isn't he? Beedrill and Vespiqueen? 😐