!say or !talk

[Shortie]

cant remember where i saw this ... .. its a nice feature where you can talk as any user hrhr .. using the command like this
!say somenick Hey im somenick

And in main it shows like this
Hey im somenick
even though my nick might be shortie or Tehshort or something like that..

im pretty lost regarding this nice little feature .. and i hope some of you ppl could help me with it...

[Shortie]

damit nevermind .. i found it ... sorrry =/