A: David, are you going to Tao Tao's party at 8 tonight?
B: What party?
A: Her birthday party! Everybody is going. It's going to be fun.
B: I guess so. Count me in.
A: Sure, see you there then.
B: Yes! Be there or be square!
* I guess so. 我想说这样
count 查数
count me in 算我一个
be there or be square 不见不散