The inverse (x^-1(to the -1 power)) of the question marks... this is rarely ever seen since the ^ key is so annoying to look for, unless you already know what it is. The actual meaning is not as well known; but it is easily either

1)coming from someone who in actuality has no questions
2)coming from someone who wants someone to ask them a question so they can look smart
3) coming from someone who really has absolutely no idea what's going on at all (like towlie)

When you copy and paste "!1!1!1!1!1!1!1!1!1!1" and go too far.

used at the end of an extremely sarastic statement

Something that you out at the end of your sentence to be sarcastic

Used to make a sarcastic statement even more exaggerated.

the repeated usage of 1!!11! indicates the sarcasm after a phrase, sentence, or word.
for example
-" i hate you for saying that!1!1!1"

A term used to describe counterfeit goods of extremely high quality, so much so that they look identical to the authentic product.

Commonly used on r/fashionreps and among other counterfeit clothing communities.