Nine months and one week:
"Mamamamamamama" (Nope, even if he says it...he still doesn't mean it!).
"Dadadadadadadadad" (Yes, daddy...he still doesn't mean yours either, so don't flatter yourself!).
"Babababababababa" (A very primitive bye-bye, usually accompanied by a little waving hand).
"Pffft....pffft...pffft" (Little mouth farts that inevitably shower my face with drools!).
Oh boy, we've got a loooong way to go (...and I've got to remember to switch back into grown up voice when not addressing or talking to the baby!).