Waterskiing with the vacuum cleaner chord.
Me: "What are you doing?"
S: "I waterskiing, momma want turn?"
Pretending to nurse a muppet.
S: "Momma, Ernie want to nurse."
Me: "Ahh, okay"
S: "no momma, no pretend, NURSE Ernie."
Rapid cleaning of a bedroom.
S: "I jump" (off a cubicle bookcase that lays flat on the floor)
Me: "Let's not jump, it's messy here. We can jump later."
S: "clean up now, I do it."