I just found this beauty on stackoverflow:
This guys trys to send email through gmail, but has some dificulties.
While explainging his efford, he blindly copy/pastes the source of his program, including gmail credentials.
This is quite a awsome wtf to begin with, but the best is:
When someone tells hime to be carefull with these thing, he sais: "i doesn't mention my gmail username and password anywhere in my code.it is possible for send mail in java"
He doens't even know!
He changed the post now, but I was there when he just posted it, and it was his actual password!