You Must Be Good

you must be good, so that you can sleep at night
 you must be good, so that your mamma can hold you tight
 and you must be good, or the devil come lick you
 you must be good, dont let him trick you
 oh every day, tempted by temptation
 and every night by another situation
 but you must be wise, be wise and recognize
 or the devil come pull you down in a girlish disguise
 you must be good, so that you can sleep at night
 you must be good, so that your mamma can hold you tight
 and you can't be bad, or the devil come lick you
 you must be good, dont let him trick you
 avarice and envy, lord these sins are deadly
 greed and vanity, they hurt a good man plenty
 but you must take care, and beware in your youthful insobriety
 your cup may be full now but in the end it will be empty.
 you must be good, so that you can sleep at night
 you must be good, so that your mamma can hold you tight
 and you must be good, or the devil come lick you
 you must be good, dont let him trick you