Top Definition
having sex with an inanimate object yet still reaching an orgasm. the object must also orgasm.

only 2 people are known to have achieved this. ron jeremy and chuck norris
ron jeremy: i got to 19th base with that sexy tree down the road

chuck norris: *ROUNDHOUSE KICK*
by andrew osullivan September 11, 2006
4 Words related to 19th base

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