Top Definition
Sex of any sort, mainly vaginal or anal as to cause thumps on a wall or such, in the library shelve area.
Guy 1:Dude, i just had a librical thump!
Guy 2:What? Howd you pull that off?
Guy 1:No one goes to the autobiography section.
Guy 2:Nice
by Mr Fergison May 28, 2010
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