Working on a project (auction website) with a group, one of them described himself as an experienced web developer (both front and back end). Two weeks into the project, he won't shut up about using Bootstrap and how great it is (even tho we decided on not using it); fucks up even the simplest queries and doesn't know any OOPHP. Needless to say, he got kicked pretty soon and after making some nonsensical threats to the group members we never heard of him again. Or so we hope.