The context of the following conversation is Addison was playing a game of poker and noticed Austin standing in the background watching on but too shy to ask to play.:
Addison says I was playing a game of poker when I noticed Austin standing by the doorway watching me..
The friend responds Why was he watching you?.
Addison responds I guess he was too shy to ask to play.  I asked him to sit down and join us..
The friend responds Did he play with you guys?.
Addison responds The kid is so good too. Who knew?  He kicked my ass at the game..
The friend responds The quiet ones will surprise you..