Okay, so I've kept a running list of funny things Jaysen has said throughout the years, or mispronounciations, or just general aphasic word substitution. Here's a few of the winners:
Shirp = Shirt
Waikiki = Blanket
Kia = Video tape
Goom = Moon
The Screamer = The baby monitor. "Hey mommy, the screamer fell down!"
Schnakka = Kwanzaa. I think this came from a discussion about different holidays and cultures we had one day.
Eatdafoos = April Fool's! This one took me about six months to figure out- until I heard it on a Spongebob episode...
CDR = VCR
And a bit more recently...
Leg Pit = The backside of the knee. Relative to the arm pit.
Towel Hat = What mommy wears on her head when she gets out of the shower.
Bobo stick = Pogo stick