Here are some of my favorites:
hanitizer "I don't need soap, I used hanitizer."
yittle "I'm yittle pookie, and you are big pookie."
bite-a-wims "Mommy, I want my bite-a-wims!"
monica "I'm just playin' my monica."
wave "I'm going to wave you." (she says, holding up the tape measure)
spoovie "Mommy, please can we have spoovies for breakfast, please?"