"Ba-Bye Boo"

So this is hysterical and I HAD to add it to the blog. This week for some reason (Mike and I have NO idea why!?!?!) Ethan has been saying "Ba-Bye Boooooo" when he is saying bye to someone. He has been saying "ba-bye" for a long time and with the most perfect southern accent too! But all of a sudden he started to add "boo" to it! I have several friends who call their kiddos "boo"...but neither Mike or I have ever said that to him and in fact we have specifically not said it to him. It is honestly so funny though that Mike and I have to completely turn away from him when he says it so that we don't prolong his new use of ebonics!