Alan Shearer threatens fans with Newcastle tickets after joining Twitter

Social media trolls might want to avoid bothering Alan Shearer after his horrifying warning:

Yikes!

It was a brilliant tweet during his first day on the social media website, as he poked fun at his former club and their recent struggles.

Newcastle fans, however, might feel differently after reading the comments made by one of the greatest players to put on a black and white strip.

Shearer holds the Newcastle goal-scoring record with 206 during 404 appearances.