A teen’s birthday party turned into a night of horror after a floor gave way from the weight of the crowd, injuring eight people. Scores of dancing teenagers plunged into the basement at the home outside Denver, after the location of the party reportedly ended up on social media. A giant hole is now where the living room used to be. Firefighters have declared the house unfit for occupancy. Authorities say as many as 150 kids turned up, and the floor just couldn’t support the huge dancing crowd.