The whole Emma and Shirley line at the beginning is related to
Mori-sensei's works
Emma and
Shirley, both seminal mangas about maids (also highly recommended BTW).
The joke about the squirrel is probably because "clitoris" in kana is written as
kuritorisu, and "squirrel" is
risu . So "Kuri the
risu"... Yeah, very much a dad joke there