How do i break into a lock?

Question

my sister has a doorknob on her door that requires a key to open it so i don't steal her things, but this Wednesday i am going on a camping trip and she stole the tops to my bathing suits and locked them in there, i used to be able to slide a credit card through the side and it would just open, but for some reason that doesn't work anymore. have any ideas?

Answer 1

Use a rigid butter knife and wedge it in there like you did withth the credit card. Butter knives don't break as easy!

Answer 2

Tell mother.

As a safety issue, for example if there were a fire, bedrooms should never have locking doors.  Too bad you and your sis cannot be trusted.

Answer 3

...take the credit card and buy a new suit...