Dongyang people boil eggs in boy’s urine and sell them for 1.50 yuan (just over 20 US cents each). They're said to be selling like hot cakes!
Now for me, eating birds eggs is pretty bizarre enough itself, boiling them adds to the chaos, and doing so with urine, and being allowed to simmer all day(!).. well, that's just the icing on the sugar of madness.
In 2008, these tong zi dan (Boy eggs), were listed by the city of Dongyong as a local intangible cultural heritage.
See: Boys Urine Soaked Eggs Listed as Local Specialty
Crikey.. Actually, on a similar note, I recall watching "An Idiot Abroad" (an excellent TV documentary series well worth watching), a guy named Karl Pilkington who travels to see the 7 wonders of the world, one of them being the great wall of china. Anyhow, he gives his view on the chinese way of eating, which to be sure is not much more bizarre than his own, just different.. See this video about 2 minutes in, where they show yet another way eggs are eaten in that part of the world..
And if you found that bizarrely fascinating, have a look at this one: