Why the nickname Monkey?

My oldest son Wyatt gave me the nickname Monkey. When he was first learning to talk he would call me Mama but one day for some reason known only in his little mind he started calling me Monkey. I hated it, and would tell him, "No, I'm not Monkey, I'm Mama." He would smile and continue to call me Monkey. I thought it was embarrassing when he would call me "Monkey" in public and everyone would look at me, but over time I grew to like it as it was his special name for me. About a year after he started calling me Monkey, he just stopped and started calling me Mom, not Mama or Mommy, Mom! like a teenager, I longed for the days of hearing him yell "MONKEY!" Brent though, to this day has continued to call me Monkey, so I have Wyatt to thank for my nickname, but he refuses to call me that because he thinks it is silly.