I always talk in a high-pitched voice and often change words.
Mommy turns into, "Muma" and Daddy turns into "Da"
I talks childish at times and will sometimes miss some vowels, or L will go away completely, they don't even turn into a W. When she is crying she often misses some vowels and they turn into squeaks, or sniffles, because I imagine her talking squeaky when she is crying, sort of like Simba. I also repeat words sometimes. It's part of being a cub, DON'T QUESTION IT!
When I am eating, or something like that where my mouth is holding something or I buried my head in the dirt, my voice turns muffled. You know, "Whgy mef?" meaning, "WHY ME?" xD or, "Ig wanged ZEBAG!" meaning, "I WANTED ZEBRAH!" xD
I do a lot of voices, depending on what I'm doing. Hope this answers your question, lawl.