A sex act involving a an autographed Louisville slugger baseball bat, a can of spam, and two plungers.
Jane: Wanna do something kinky tonight?

John: How about a Louisville Plugger

Jane: Get out of my house you sick pervert
by Yttrium December 21, 2004
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The act of using a metal baseball bat to cram illegal substances into your anal cavity.
Howard could no longer get high by smoking the meth, so he had to use the Louisville Plugger to get the job done.
by Herbie Hancock October 11, 2019
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