A metaphorical card that one loses upon engaging in sexual intercourse in the library.
Kate took John's library card in the stacks last night!
by lbeesntdeirx February 19, 2013
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a plastic card that enables one to have fun in circumstances related to the dewey decimal system
Because having fun isn't hard, when you've got a library card!
by Arthur Reid January 02, 2012
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When your parents are in the next room so you and your sister go to pound town quietly
Brother: looks like we might have to pull the ole' Louisiana library card today, mom and dad are home *insert a subtle "Yee yee"*

Sister: mom and dad died in the crash 8 years ago brother...you gotta let it go..
by Connorbrown3993 January 12, 2019
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