Here are mine.
I was in a public toilet in the cubicle and heard a woman come in with a small boy.
They went into a cubicle together and I heard her ask him repeatedly "Do you want to dirt!?"
She meant poo!
"Do you want to dirt???
Omg.
Second is SIL. When her DS was little...around 2 or so, she'd put chips for him INTO A BOWL OF COLD WATER so they'd cool faster.
Dump the cooked chips into a bowl of water. Leave them there for a bit and then drop the soggy pile onto a plate for the poor child.
WHY? What are yours?