Today gone to grocery and move the cart to front of cashier. I had face mask and can not speak so loud. I signed to the cashier “perfect” and he think I said something wrong, he remove my cart away! I was like whoops? You know why…he and me are race different. See race different? My point is. Look at the picture.

Okay
Perfect
9 (nine)
Great
Friday
All that sign language miscommunication with people who use the WHITE POWER sign. Or can be ASSHOLE sign.
What about I LOVE YOU sign? Look at the picture.


Those pictures would make you think ROCKS sign!!!! Yeah, I see that much! deaf people often misunderstands from them. One deaf guy that I know fistkiss the KISS band, he kept said they always say I LOVE YOU! I think he must be mental illness!
The sign language started in fifth century BC. The American Sign Language invented in 1814. There is lot of different sign language in the world started later in 1986. Universal sign language and baby signs becomes common like above pictures. EAT, DRINK, DRIVE, SLEEP and COLD or HOT. That is very common sign language for everyone among us. I raised with those signs, too.
Hope that helps little and can research more. link https://en.wikipedia.org/wiki/History_of_sign_language
~ DW