Postest is the biggest unit of big stuff that can't be beat by anything. It's mostly used when you're in a predicament about who loves who more; if you say, "I love you mostest postest" you automatically win. Postest can't be beat by any more, most, tons, morers or any of that. The person you used "postest" on usually gets pretty mad because they can't beat you after you threw postest at them. All in all, postest is the biggest unit of big stuff that cannot be beat no matter what and no matter how hard you try.
I love you.

I love you more.

I love you most.

I love you mostest postest (:

No fuck that I love you more.
by baaaylaaay June 24, 2011
5 Words related to postest
When some protests something using posts.
On Facebook people postested me for being a troll.
by SRJ DOOM March 24, 2014

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