Most people seem to have a pretty bad sense of touch.

During certain times of years you get a lot of single spider-silk threads flying in the air and I constantly walk into them. But almost no one else seems to notice them.

I recently have been bitten by quite a few ticks and can never seem to find them until days later. They are so fucking tiny, smaller than a grain of sand! Oh yeah just feel my legs? How do you tell the difference between a tiny scab from a thorn scratch or a tick then? Usually only find them once they have been there for a while and got bigger. Which isn't exactly ideal.

you'd probably notice if you woke up with one crawling up your arm

source: trust me bro (I have dogs)