The Jackbox Party Pack 2
20 Achievements
1,000
8-10h
Earwax: Yada Yada
Win a round with two voice SFX
50
19.13%
How to unlock the Earwax: Yada Yada achievement in The Jackbox Party Pack 2 - Definitive Guide
Now you will need at least 3 tabs open as the minimum is 3 players. Go to http://jackbox.tv and enter the room code for your game. Once the game begins the judge will pick the prompt, now with the other players look for sounds that have words in quotations marks "like this" which denotes they are voice SFX sounds. Pick 2 with one player and have the judge pick that sound clip and the achievement is yours.
When choosing which two sounds you want to use, you will have a variety of categories to choose from, one of which are voice sound effects (yell, scream, hum etc.). Any active player will need to choose two of these effects and win the round to unlock the trophy.
Note that two voice sound effects will not always been available and you may have to play through a few rounds to do this.
If playing with other people, this may take a few tries as the winner is up to the other players. Try and always choose two voice effects when you can.
If using the multi-user method, have every player go for this trophy as it does not effect Bodily Malfunction. When a player gets two voice effects, have them win the round. See the multi-user walkthrough for details.