Korean Moms love to snoop. We have all at one time or another been victims of the 'Korean Mom Cleaning' that conveniently happens in your bedroom only on days when you are not at home. Cleaning = Snooping, which is really your Korean Mom's excuse to dig around and discover things to punish you for. There are particular things a Korean Mom will look for while snooping:
a) Drugs (Really anything that looks like a pill that is not from the Korean pharmacy)
c) Evidence you are sexually active (Ladies: being in possession of thong underwear counts as sexual activity. To a Korean Mom only prostitutes and Britney Spears wear thongs...neither of these being good.)
d) Porn (Beware, to a Korean Mom any sort of picture with someone wearing anything less than a turtleneck is Penthouse material)
e) Bad Grades
f) The Bible (if she sees this sitting somewhere prominent she will forgive you for at least "d" and maybe "b". If it is open with some highlighted passages clearly visible she may forgive you additionally for "e")
Do not ever straight up accuse a Korean Mom of snooping. She will only assume you are hiding something unforgivable like a condom (even though she does not know what they look like) or a 'B+', and commence looking for said evidence as soon as you leave the house. The condom she will probably not find, because she will think it is a giant piece candy...but the 'B+'? Oh, she will find it my friend...and you will pay.