As a follow up to the previous conversation, the link that N sent me was about a Hong Kong 41-year-old man who was taken to a hospital after he tried to have some boom-boom time with a steel park bench and then discovered he couldn't extricate himself when he uhm, got stuck inside one of the gaps in the bench.
When doctors arrived on the scene they tried to release some of the pressure by removing some of his blood, but the penis was so swollen that they ended up having to cut the entire bench free and take it, with Xian attached, to the hospital.
Park bench sex FAIL right there.
Read more here.