short for "thats amusing" because "lol" implies that you actuallylaugh out loud at something, when you actually do not. Therefore, you say ta instead, since that is actually what you mean.
Trendy Asian. An asian person who is dressed in Hollister, Abercrombie and Fitch, or Buckle clothes. The normal TA aslo takes pride in his/her hair. Most TA's like to call themselves "fresh" or "fly"