"Da stimme ich zu!"
"Das unterstütze ich!"

Siehe auch LEO: Siehe Wörterbuch: second

At a meeting of any body (trade union,government committee ,political party meeting...whatever)a motion (proposal for future action by that body) cannot become open for discussion until it is seconded or has a seconder.The person seconding it may then speak in favour of the motion or it may just be forally seconded by someone saying 'seconded' or 'I second the motion' If after discussion the proposal is agreed by voting, the motion is then said to be 'carried' not 'passed' as is heard sometimes. (Passing a motion has an entirely different meaning).
The expression 'I second that'can be heard in everyday speech.
In the example quoted 'I second that 'emotion" there is either a misprint or the writer or speaker is being humorous. Either way it just means what Anneli has said.

Sorry correction end of second line for 'forally' read 'forMally'

I second that emotion is a quote form James Brown - the soul singer. It is a twist on 'to second the motion' .

James Brown is known for his sensuous music and I second that emotion is used to state agreement that goes beyond a simple yes. It is an emphatic, lusty yes!

Almost right - and it could be James Brown but it isn't. It's from

I Second That Emotion
Smokey Robinson and The Miracles

(Written By: Smokey Robinson and Arthur Cleveland)

Maybe you want to give me kisses sweet
But only for one night with no repeat
Maybe you'd go away and never call
And a taste of honey is worse than none at all (oh little girl)

Chorus:
Oh little girl, in that case I don't want no part
That would only break my heart
Oh, but if you feel like loving me
If you got the notion
I second that emotion
Said, if you feel like giving me
A lifetime of devotion
I second that emotion

Maybe you think that love would tie you down
You ain't got the time to hang around
Maybe you think that love was made for fools
So it makes you wise to break the rules

Chorus
Oh little girl, in that case I don't want no part
That would only break my heart
Oh, but if you feel like loving me
If you got the notion
I second that emotion
Said, if you feel like giving me
A lifetime of devotion
I second that emotion

Maybe you want to give me kisses sweet
But only for one night with no repeat
Maybe you'd go away and never call
And a taste of honey is worse than none at all (oh little girl)

Chorus
Oh little girl, in that case I don't want no part
That would only break my heart
Oh, but if you feel like loving me
If you got the notion
I second that emotion
Said, if you feel like giving me
A lifetime of devotion
I second that emotion

Maybe you think that love would tie you down
You ain't got the time to hang around
Maybe you think that love was made for fools
So it makes you wise to break the rules

Chorus
Oh little girl, in that case I don't want no part
That would only break my heart
Oh, but if you feel like loving me
If you got the notion
I second that emotion
Said, if you feel like giving me
A lifetime of devotion
I second that emotion

Well, if you feel like giving me
A lifetime of devotion... (to fade)

JGMcl and S (corrected by Surfer) are correct.

BTW: Robert's Rules of Order (Henry Martyn Robert. - Newly rev. - Glenview, IL : Scott, Foresman, 1970; etc.)is the standard work in the US for rules of holding meetings, and terms such as "move," "table" are explained therein.

sekundieren = beistehen

So wie der Sekundant beim Pistolenduell.

häufig in meetings, auch Parlament gebraucht: Jemand stellt etwas fest und ein oder mehrere Personen 'sekundieren' es, d.h. sie erklären ihre Zustimmung bzw. Unterstützung des Vorredners.

und was heißt dann "I third that?" hat mir mal wer geschrieben auf die antwort von jemandem "i second that"

... ich unterstütze es auch.

auch wenn es ein Pun ist.

Das ist wie der Witz mit den drei Politikern, die zu spät kommen:

Der erste, nennen wir ihn Mr. Reagan, sagt: I'm sorry.

Die zweite, nennen wir sie Mrs. Thatcher, sagt: I'm sorry, too.

Und der dritte, kein anderer als Herr Kohl angeblich, sagt: I'm sorry, three.

zur Erklärung: auf too/two folgt three und auf second natürlich third :)