//during open house Stein: Hey, look! A parent! I almost forgot! It's Open House today! Thiagu, is that your dad? Thiagu: Yes Stein: Well, Mr. Thiagu, we're doing exponential growth right now. Follow? *no response* Well, Thiagu what do we get? Thiagu: Umm... //after getting the answer Stein: So you say to yourself-- *all but Thiagu's dad say self* Okay, Thiagu, you really need to talk to your dad about this class.