Top Definition
When a mommy and daddy love each other vewwy vewwy much they copulate.

children downstairs get disturbed by the banging of the downstairs door.
"OMG! its the downstairsdoorsyndrome! mom and dad must be 'doing it' ;).... ewww"
by Kimmy mc Timmy June 21, 2009
6 Words related to Downstairsdoorsyndrome

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