Laura Kreitzer said this quote
“ When the nurse leaves, Doctor Rose mouths, “Act like you’re in pain.” Then she mimics a painful expression in case Summer doesn’t understand. On the contrary, Summer’s an expert at interpreting body language and reading lips. It’s all thanks to her observant nature while enslaved on the Cosmos. Who else could tell that Peter’s discomfort is due to him wearing the same pair of underwear for a week straight? Ah, yes, she always knew when day six and seven approached. She watched the crew member with much amusement as he waddled, pulled wedgies, and scratched his bum relentlessly. Not that anyone else cared to know that little nugget of information. ”