<p>A manager at an Arby's fast food restaurant in Washington state has been accused of urinating into a milkshake mix that might then have been served to dozens of people.</p><p>Police in Vancouver, just across the Columbia River from Portland, Oregon, said they uncovered footage of the 29-year-old man peeing into a bag of milkshake mix as they were executing a search warrant on his phone as part of a child pornography investigation, The Columbian newspaper reported.</p>