DeathTweet 

A Deathtweet is when someone uses a twitter account to make death threats to someone else. This is typically done using a fake account so the DeathTweet is not linked to their personal account if they have one essentially allowing the tweeter to remain anonymous. Although it is sometimes preceded by a DeathTweet a Deadtweet is not to be confused with a DeathTweet as it is an announcement of someones death.

Oh damn, did you see Glenn Becks page after the teaparty rally? He got like 80 deathtweets in a matter of hours!

DeathTweet by Asher Sevyn August 31, 2010

Deathteen 

The magical time between 13 and 14 years of age, when a teenager is their most annoying and obnoxious.

"Maggie just turned 13 and has gone crazy."

"Yeah, she's a real deathteen."

Deathteen by Vladmech March 20, 2010