you know when you spend like five minutes trying to condense what would be a ten-minute conversation into 160 characters, and you get some stupid response back? that's what these are. if you're going to reply with one of these, don't even bother sending anything at all.

• oh
• yeah
• thats good
• wow
• haha, lol, or any variant
• aww
• yay
• k, kk, or any variant
• ok
• i see

it's like saying, "i know you just sent me your life story, but i've really got better things to do than type out an actual response."