How I know I'm a mother

When I wake up to my alarm clock going off in another room, and I am cuddling a teddy bear. When I look at dinner, and think - oh, don't eat all of that because it could be C-man's lunch tomorrow! That I know every type of truck ever made by its scientific name. There's no other place I'd rather have him then backing up his caboose to sit in my lap while we read a book about, what else, trucks.