There's So Many Variations Of "Things About Humans/Things Humans Do That Gross/creep Out The Transformers".

There's so many variations of "Things about Humans/Things Humans do that gross/creep out the Transformers". What would they find interesting about humans that we may not necessarily think much of? Hair is definitely up there I'd say.

That humans can't see their own stripes since they are only visible under ultraviolet light.

They're called Blaschko lines, and they're as unique as fingerprints. They can be visible with skin disorders.

Some people can figure out their pattern if they have a tendency to freckle from sunlight. Others claim they figured theirs out by following mole placement.

So Cybertronians would be absolutely fascinated by humans walking around with their markings and completely boggled that they can't see them. At one point, they thought flannel, zebra stripes, cheetah print, and other fun patterns were some sort of fashion statement along with their Blaschko lines. Cybertronians thought it was abstract art that delighted some and infuriated others because of incongruent matches.

Hair wouldn't be too strange to them as long, thin strands of wires were a fashion statement and a status symbol at some points. It's just that human 'fur' doesn't fulfill its primary function of warmth. It's the secondary functions that humans fuss over. Some hairstyles are absolutely wild to them, like the pouf style of Marie Antoinette's era with ships and bird cages with live specimens.

Cybertronians are rightfully concerned over humanity's collective urge to adopt dangerous fauna as pets or to keep in their household. Canines and felines are popular, but so are reptiles, arachnids, avians, and sea predators. Humans have no fangs, claws, or exoskeleton, but they feel compelled to take poisonous, venomous, and/or proficient hunters into their arms.

Humanity's history of agriculture and culinary explorations are multi-tiered mental fuckery mazes. It brought many mechs to tears trying to trace the impact of the cabbage family across the world. Fungi is another field that the less is delved into, the better their mental health. (Who!? Who the Pits came up with Hákarl!?)

What's really fascinating about human biology is just how resilient they can be. Sure, they can squish one with their foot, but humans manage to figure out how to survive without major organs with medical intervention, which is far more metal than some other organic species they deal with. What's really gross-curious is the extent, like how a bone graft will attempt to match the skeleton of its new host or how their resiliency can backfire with medical conditions, like autoimmune diseases and cancers. (Teratoma was a freaky thing to them. An unwanted extra mass that could grow teeth, bones, and hair within it!?)

Food intolerances confuse them. Especially since individuals with lactose intolerance have no fear of any culinary deity. Whatever sins committed is a wretched pact between that human and the toilet.

Another confusing aspect is the constant debate of a soul among humans. Popular arguments are the heart, stomach, and brain/mind. Meanwhile, the Cybertronian 'soul' isn't a philosophical debate. It's a physical reality with their spark.