Hearing that his mum was pregnant a toddler voiced his opinion: "What were you thinking?"
For a minute and a half, Trey describes his utter shock that his mother would need to "replace" her two existing children with a third.
"This is exasperating ... because, because you just got two," the US boy said.
"So why do you wanna get another baby and just replace one of your babies? It's too much."
His mum replied: "You're just gonna have another brother or sister that you have to take care of, or help take care of."
But, Trey digs his heels in: "That's what makes no sense ... If it made sense then you'd just have two babies and you keep loving them forever, not having another baby between us."
The video was posted to YouTube last week by Shanee Hart and has been viewed more than 60,000 times.
Is it ever OK to complain about other people's kids?Related story: (See story)