We were snuggling in bed this morning and Indigo was wearing these pajamas:

She sat up, looked at Jim, and pointed at her backside.

Indigo: “Dad, what is the fancy name for this?”

Jim (perplexed): “A frog?”

Indigo (shaking her head): “No, the fancy name for this?” (more pointing)

Jim: “What’s the fancy name for your butt crack????”

Sensing her father’s confusion, Jade decided to be helpful.

Jade: “I think it’s called your coccyx.” (Of course, she pronounced it coc-sis and didn’t know how to spell it)

Hmmm… apparently somebody in the house is learning about skeletal bones.