The Premier League's highest all-time goal scorer and Newcastle legend threatened trolls on the social media site with tickets for his beloved club if they 'abused' him.
In just his second tweet, Shearer wrote: "Be warned. Any abuse and I'll come round and give you Newcastle tickets!"
Shearer was alluding to a recent Barclays advert, where he remembers attending his first football game as a child, before surprising a young fan with match tickets.
Newcastle are currently only one place away from the relegation zone in the Premier League, without a win in their last nine games.