Chatimus derives from the combination of slang word chat and the transformer Optimus Prime. Provides a nice flick and sss at the end of tongue, giving users an emphasised version of chat.
whilst watching someone picking up dog shit
"thats sooooo chatimus".

Watching a nub miss a perfectly good pudge hook.
"tsk*. chatimus prime".
by fattony123 August 15, 2011

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