Can also be used to display your disgust in someones negative attitude towards your dreams or achievements. A shortened version of "Thanks for shitting on my hopes and dreams."
"Gee, mom. Thanks for shitting ;_;"
"Oh, ok, lets go!"
"Guys I learned Holiday by Green Day on the bass!"
"Haha, Greenday sucks!"
"Yeah, but the song has a killer bass line!"
"No, its stupid and even a noob whos been playing bass as long as 3 weeks could play that."
"Gee guys, Thanks for Shitting ;_;"