As I was exiting the lift with my two-year-old in the pram, another pram went out ahead of us. Since I was backing out, I didn’t realize they were still near the elevator entrance, and I accidentally bumped into the woman with the other pram. I was looking at my phone while maneuvering, but I immediately apologized. However, her husband deliberately said, "She’s on her phone, she’s stupid." My little girl heard it and repeated, "Mum, are you stupid." I was absolutely fuming and really wanted to retaliate. I was so angry and told him that I already apologized and I think you're stupid and rude. I know I should have just ignored it but it really made me so angry.