Colin Kaepernick is nothing if not social media-aware. But he also could be self-aware, which made him turn nasty to a naysayer.

The San Francisco 49ers quarterback, who heads into the 2015 season with a lot of question marks and is working intensely now to help him next fall, decided to talk about his offseason prep work to his Twitter followers.

49ers offseason plans to ignore the work Colin Kaepernick has done with Kurt Warner?

To which a Twitter user named Stephen Batten decided to get in a little jab at the starter who struggled last season.

"@Kaepernick7 @49ers ab workout won't help find open receiver #study

The comment did not sit well with Kaepernick, who went off on his critic.

"@battman_returns are you illiterate or just ignorant? Read the tweet again better yet give me your breakdown of every defensive coverage"

"@battman_returns you got 8 followers bruh your own family don't even want to know what you doin! Get better at life!"

Colin Kaepernick's subpar 2014 could cost him more than $100 million

Kaepernick is working with two-time NFL MVP Kurt Warner at the EXOS performance facility. He is trying to learn the nuances of pocket-passing after struggling through his worst quarterback rating as a pro last season as the 49ers attempted to use him more as a pocket passer.

Kaepernick signed a seven-year, $126-million contract last summer with the franchise that give the team the option to release the University of Nevada alum without financial penalty before April 1 of each season.

Kapernick made nearly $13 million in 2014 but already has lost $2 million of his $12.4 million salary for 2015 because he failed to lead his team to the Super Bowl or earn All-Pro status.

New 49ers coach Jim Tomsula said he intends to put Kaepernick in more of a position to use his quarterback assets in terms of running the football from which the team went away in 2014 under former coach Jim Harbaugh.

But speculation has risen that if Kaepernick struggles again in 2015, the 49ers conceivably could release him in 2016 without further financial obligation.

So he could be forgiven to being a little bit more edgy as he navigates through perhaps the biggest offseason of his NFL career.

Kaepernick made Batten a popular guy. Batten now has more than 3,200 followers, even though he deleted his tweet about Kaepernick. The tweet itself received more than 3,000 retweets and 4,000 favorites - both more than Kaepernick's original tweet had.