I'm Dumb

"Ah-Xin, why are your hands sweating?" asked Xiu as she sat between her fathers. "Father, even you have beads of preparation on your forehead. Are you both alright?"

"My little lass, I just realized, I'm gonna be a grandfather," replied Xin Zimen.

"It's not your first time," said Xin Zemin from the other side. "I'm the one who is feeling even more nervous. It's my first grandchild."

"What the hell?!" retorted Xin Zimen. "Just because I have grandchildren that I'm prepared to be a grandfather again. Besides, it's my little lass's, first baby. How can I not be nervous about this?" 

"You both have known it for months that you're gonna be grandfathers. Why are you reacting like this now?" Xiu chuckled at their reaction. She couldn't hold it, it was truly funny.

"But it's finally sinking in now," answered Xin Zemin in the same words that had been on the tip of Xin Zimen's tongue.