Looking at my phone’s screen, you’d say my mum is crying. Teary eyes slanted on the side, red cheeks and one hand covering her mouth. But Mum, she’s laughing. Some people you can never tell if they’re sobbing or having a blast. The phone in one hand, her shoulder jerking up and down, and the video call gets all shaky and lagged. I tell her that it’s giving me seasickness and I fake retching. She keeps…