Mah!

When Seraph was little, she noticed that everyone was giving her kisses and she wanted to give us kisses back.  She couldn't quite figure out how to do it. So, instead, she'd push her lips against your face while saying, "Mmmmmmmmmmmaaaaaah!"
Seraph has since learned how to make kissing sounds with just her lips.  So, she doesn't say it anymore.  However, it's become traditional in our family to say, "Mmmmmmmmaaaah!" (even without the kiss) as a loving greeting or  farewell.

"Love you, Mom, mmmmmmmmmmaaaaaah!"

"Goodnight, sweetie, mmmmmmmmmmaaaaah!"

"I'm going over to Jeff's house - mmmmmmmmmaaaaah!"

 "Have a good day at school!  Mmmmmmmaaaaah!"

"Missed you!  Mmmmmmaaaaaah!

:)