Andrea's favorite word

"Why?" Greta didn't start asking why a lot until she was maybe 3. Sometimes she almost drives me crazy, and I don't think I'm the only one.

Examples (I couldn't remember a specific, so I asked my mom. These are all from tonight while I was at school):
"Andrea, let's go get in the bath?"
"Why?"
"You need to get in the bath."
"Why?"
"To get washed up. Greta needs to get in too."
"Why?"
"Because you're dirty!"

"Andrea, do you want some peas?"
(Shakes her head no.)
"They're good for you."
"Why?"....

"We need to go inside."
"Why?"
"You're all wet."
"Why?"
"You were playing in the water."
"Why?"....