We were taking a walk when Alex stepped onto the yellow sloped curb. He slipped and fell on one knee, but wasn't really hurt. So I told him not to step on the yellow part, which he ignored.

"Don't step on the yellow part, Alex. You'll slip and fall."

"And DIE," added Zoe.

"He's not going to die, " I reassured, while my wife is stifling her chuckles.