-noun
1) A term used to describe the location one exists after they have been called out, preferably for making an innuendo or saying something sexually inappropriate.

2) A large passenger vehicle, real or imagined, where explicit things may, or are implied to, occur.

-verb
The act of calling a person out for making an innuendo, double entendre, or an overtly sexual comment.
1) "Did you just say I want you to come with me? There's the gutterbus."

2) She brought a case of whipped cream onto the gutterbus. Everyone knew what she was using it for.

3) Michael gutterbussed his brother when he read his text messages he received from his girlfriend outloud at the dinner table.
by NotoriousTori September 21, 2009
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