Wannithita: It is an odd expression intended to convey humor by an excess of affirmation. It would be proper to use only one of those words as the beginning of a phrase or sentence. However, true to form, the English speaker who authored those remarks, is showing his or her sense of humor. I would be showing the same sort or wry humor if I wrote something like this to you. "Wannithita: Certainly, Absolutely, of a Truth, and without question, you can trust me as your good friend." You see. It is just a playful wordplay. How can you use it? Well, when you are with friends, and you want to say something funny. This highlights one of the difficulties with foreigners hearing the many slang expressions used by Native English Speakers. They suppose that They---Can---Use---It; but no, you can't. Attempting to learn all the subtle distinctions about using Slang and Idiomatic experessions is probably more than twice as hard as learning literal expressions in the English language. So if you speak or write, just use a word like "Certainly,...." and be content with a proper use of English. . .