A hater who is also a poser. A person who hates on others because said person thinks he knows a lot about something (but he doesn't, he's more a poser ).
a kid who goes to the skatepark with a skateboard often a kryptonics Walmart board or a penny board regular activity’s are texting calling their mom or taking selfies they can’t even go down the smallest bank at the park
The guy wished he had been naturally gifted music maker, but knew it wasn't his particular skill set. He would still claim it in public, even if it wasn't his instrument, since he was a band poser.