San Francisco 49ers quarterback Colin Kaepernick is not one to sit idly by after getting heckled on social media.

One particular Twitter troll found that out the hard way on Wednesday, when Kaepernick put him on blast.

It started when the 49ers quarterback started discussing how intense his offseason workout regimen is. Even during a “recovery day,” Kap seemed to hit the gym pretty hard.

That’s when a Twitter troll attempted to rip Kaepernick’s field vision. But Kap fired back hard.

Kap then finished the heckler off by ripping him for his number of followers and telling him to get better at life.

Pro tip: Do not attempt to heckle Kaepernick on social media. It will not end well.

[Twitter]