Instagram Boxer

A Fighter who has the common tendency to post his/her training in a loud, braggadocio fashion in an attempt to self-boost their own ego and cultivate some clout for his/herself. They are too worried about how they look on Insta rather than in the actual Ring and instead of keeping their head down and working hard, allowing their performance to do the talking in the ring (like most Boxers), they prefer to talk the talk but not walk the walk, only to get demolished inside the ring.

Person 1: "Yo you know EJ? He's such an Instagram Boxer."
Person 2: "I know right! Always posts his 'hard work' on his story but got his ass handed out to him by Xavier last Saturday ."
Person 1: "The ring don't lie, my friend, the ring don't lie."