The shower princess is not to be trusted. The shower princess will make statements and promises regarding speed of their shower. Do not believe them; they are falsehoods. The shower princess should be dealt with promptly, firmly and with no remorse. They will smell your weakness in your sweat and deem you weak, flabby and feeble minded. Be steadfast in your actions.
The origin of shower princess is unknown but it commonly used by US military service members living in barracks, in the field, or deployed.
Soldier 2: "If it's cold you should shart in his pillow case tonight"
Soldier 1: "Duly noted"