I think I'm generally pretty encouraging and I really like to see great shots. I'm pretty quiet, though. I'll occasionally dish out the deserved "nice shot" on a great throw, but otherwise I'm kinda quiet. If I'm with friends I notice that I tend to talk about flaws I made on recent throws or general banter about throws I've had on the hole we're on previously etc.
I wish I had someone who played at consistently the same level as I do, maybe that would arouse some of the trash talk in me. The people I play with on a consistent basis I either don't know well or are much better/worse than I am, or both.