Sebastimate 

A fail way to say "underestimate", but most commonly used in the Russian community of underground (Basement dwellers) fat kids who where make-up and pretend to hack the interwebz. But at the same time look for posts via forums and try to find a problem they can take credit for without any valid proof showing that they are the ones responsible. Thus attracting the troll squad who flames them endlessly and pisses them off to the point where they either flee from the underground and seek a new life elsewhere.... or sit and try to fight an endless wave of trolls.........

However some are still trying to learn English so they post big words to sound good, but are not aware those "big words" are improperly typed. (Sebastimate, Sebestimate)

vpxsyngexvpx: ok No Problem. Us Servers Is Going Down Again Now. Cuz You Sebestimate Me.

Troll: lol Sebastimate

Troll2:srsly learn some grammar, and ask the real attackers to show up, we don't want you here anymore.

Troll3: Sebestimate me baby!! Sebestimate me all over!!!!

Troll4: The mods just have too much fun lolling at you sebestimating eachother...

vpxsyngexvpx: ragequits

Sebastimate by Kuile April 11, 2011

Sebestimate 

To underestimate someone to such a ridiculous degree that when they retaliate and crash all of your servers you know that it was because of you that this happened.

Commonly used in the PWE game Forsaken World. First used by the hacker vpxsyngexvpx who single-handedly took down the Storm Legion server with a team of 3 people.

Ok No Problem. US Servers Is Going Down Again Now. Cuz You Sebestimated Me.

Sebestimate by vpxsyngexvpx April 11, 2011

sexstimate 

An estimate of how many times you have to take a particular female out before she sleeps with you.

I went out with Sally last night. I sexstimate two more dates.

I heard you went out with Sally last night. What's the sexstimate?

sexstimate by Hayvoon May 22, 2011

Sebestimate 

To disturb, distrupt or abuse someone or something.
Or be-little (underestimate)

You Sebestimated me!
That is completely Subestimated.
Lets Subestimate people.

Sebestimate by SirLooney15 April 11, 2011