A California man has sued BMW North America and a motorcycle-seat maker after a four-hour round-trip ride on his 1993 BMW bike with a "ridge-like" seat apparently gave him "a severe case of priapism (a persistent, lasting erection)" that's lasted 20 months and counting. The product liability lawsuit is against BMW and aftermarket seatmaker Corbin-Pacific. Henry Wolf and his lawyer Vernon Bradley filed suit in California Superior Court last Thursday. The Wolf v. BMW lawsuit alleges that Wolf has continued to suffer the erection problem since the September 2010 ride -- and, as we know from Viagra ads, anything past four hours is a problem. The lawsuit for emotional distress says Wolf is "now is unable to engage in sexual activity, which is causing him substantial emotional and mental anguish." According to the lawsuit, Wolf wants compensation from BMW and Corbin for lost wages, medical expenses, emotional distress and "general damage."