I have read about big rig truck drivers getting what they call “diesel dick” ( the vibrations from the engine hit their seat and it gets them hard. which would make sense since their prostate is right there) but i have never heard of anyone complaining…
Henry Wolf filed suit against BMW North America and Corbin-Pacific, Inc. He claimed in the lawsuit that the “ridged seat” of his 1993 BMW motorcycle caused him mental and emotional anguish after it left him with a severe case of priapism, aka a long-lasting erection.
Wolf said he rode the motorcycle in San Francisco on a four-hour round trip on May 1, 2010 and developed the priapism soon after.
Wolf “has been experiencing continuing problems since his motorcycle ride,” his attorney, Vernon Bradley of Sausalito wrote in the lawsuit. “He is now unable to engage in sexual activity, which is causing him substantial emotional and mental anguish.”
via Man sues BMW after motorcycle seat allegedly causes 2-year erection | SFGate Blog | an SFGate.com blog.