Update.
I found it, its called "Trash Talk"
Trash Talker (XBOX 360) - Features:
* Taunt your opponents at the touch of a button
* Don't get lost for words!
* Blast other online players with up to 16 different phrases
* Add new sound clips from absolutely any source in seconds, with simple drag'n'drop functionality
* Soundbits and recordings at the push of a button.
* Simply drag'n'drop new sounds into Trash Talk from your PC via the USB lead supplied
* Trash Talk fits between your Xbox360 controller and headset. Now you can choose from 16 sound clips ready to trash your opponent.
* Trash Talk has 4 sound banks with 4 clips in each bank. That's 16 sounds to taunt your opponent.
* Because Trash Talk clips are transfered directly from you PC you can download and use sounds from almost anywhere - movies, TV, ad's, MP3, ringtones, games and more!
* Sound clips can be any length from 1 second up to a minute - The length is fixed automaticaly.
* USB cable supplied means storing new sounds couldn't be simpler.
* High quality Arm processor with 20khz sampling means Trash Talk delivers crystal clear sounds to your opponent.
* Unique feedback feature means you can also hear the clips in your headset for maximum effect!
* Easy to use.
OMG, I can't wait to load it with "Stewie" insults.