Unpopular My Hero Academia quirks

Abilities that can pass as quirks but really aren't.

Being invisible to women.

how is this post blank?

Quirk: speedreading

The ability to read at the speed of light. The only drawback is you end up skipping half the content from reading so fast.

finishing Cuphead tutorial in less than 20 minutes

Kidney stones.

Being invisible only when people aren't looking

That's the opposite, a genuine quirk that no one would realize exists.

it might fool cameras

Produce a lot of saliva.

like A LOT.

...Or being able to instantly create really catchy songs.

I really liked that film when I was a kid

...

Read thrice to statistically get about 88% of information.

At the supposed speed of light you could read it 80 times to get almost all the info in less than 1 second.
Don't be cheap when you can get all.

If people aren't looking directly at you? That may actually be cool mechanic.

If I activate invisibility where nonoe looks, and then walk around am I still invisible because no-one can see me?

Gaining weight whenever you look at food.

Quirk: Stargazer (like the Rainbow song)
Lets you tell the current time in JST by looking at the stars and the current place by looking at the moon. Also causes inability to stop your best friend from going to the past and becoming a scary heartless youkai.

S-sauce???

Quirk: Human Clock
Being able to tell what time is it at long as you can see the sky

hm I should probably read the thread before posting

Quirk: friendly fire
Lanuch a powerfull laser attack but only work if you recognition your target as a your friend or ally

Quick: Geek Squad

Fix any piece of malfunctioning technology (not dead junk) after hitting it three times

Quirk: Waste of Air
Die when you breathe.

Quirk : Angler
Able to correctly estimate to the nearest degree the size of a given observed angle, and to replicate any angle to the nearest degree when constructing angles on paper, gesturing with hands, using tools or otherwise