Start a new tab that has the link pic4ever.com whenever you want to do an emojie. Personally, I have put the aforementioned website into my favorites bar. When you get to the website, just go to the emojie that you prefer on whatever page. Then click on the page looking things next to the desired emogie. That will COPY it.
Then in the original tab where you want to post, just Control V where in the thread you want to post the Emogie.