A poor bassplayer who's playing usually consists of open strings. If you gave a normal person on the street a bass, and asked him to play Pete Wentz bass lines, he could probably master it in 5 minutes. AKA All walk, no talk, he can swing around and dance with his bass, but can't play it.
Poser: DUDE! I CAN PLAY FALLOUT BOY ON MY BASS!
A real bassist: So can my retarded grandma, it's not that hard. Pete Wentz is a crybaby emo who can't play anything.
Poser: YOU JUST DON'T UNDERSTAND, HE STANDS FOR TRUE LOVE and all that shit.