There's a 24-year-old woman named Shelby Gash in Lenexa, Kansas.  And she recently put up Christmas lights on her roof . . . in the shape of MALE GENITALIA.

As you'd expect, her neighbors weren't thrilled . . . but Shelby was.  Quote, "People think it's hilarious . . . [they're] taking photos and laughing."

BUT she eventually gave in to peer pressure and took the lights down after four days. 

(Here are uncensored pics of the lights.)