hot-water bottle
Bon Bardolph, mets ta tête entre ses draps, et sers-lui de bouillotte.
Okay Bardolph, put your head between her sheets, and serve as her hot water bottle.
— Henry V (1989)
Tu ne peux même pas changer la bouillotte de ton mari ?
Can't you even change your husband's hot water bottle?
— Thirst, ceci est mon sang (2009)