Gaemer - A gaemer is someone who plays games like they're in a battle

A gaemer is someone who plays games like they're in a battle and cusses you out for being a weakling.

I beat you in League of Legends and now I'm telling you you're a noob.

You beat me in Pokémon GO and now I'm calling you a crybaby.

I lost to you in Animal Crossing and now I'm mad enough to cuss your name.