Man Claims BMW Motorcycle Ride Gave Him Two-Year Erection, Let Erection Rage for Two Years Before Suing Caity Weaver · 05/02/12 12:21AM A California man has filed suit against BMW North America after a four hour-ride on his BMW motorcycle turned into a two year party: he claims his bike's custom-installed ridged seat caused him to develop an erection that lasted for twenty months.