BLOOMFIELD, N.M. (AP) -- A New Mexico man is suing Burger King after he says a manager attacked him for complaining about cold onion rings. KRQE-TV reports the lawsuit filed in state district court says Robert Deyapp was assaulted in June 2013 when he told a manager at the fast-food restaurant in the northwestern New Mexico city of Bloomfield about his cold order. The lawsuit claims that when Deyapp asked for a refund, manager Francisco Berrera lunged at him with a stun gun and switchblade. Court records show Berrera later pleaded no contest to aggravated assault. Ronald Adamson, an attorney for Berrera, did not immediately return a phone message from The Associated Press. A spokesman for Burger King said the company doesn't comment on pending litigation.