john put up his hipster shield by telling us he's a terrible guitarist before mangling it for the the next half hour
"when a [hipster] or other self-centered person admits to having little talent or that their behavior is unacceptable in a joking manner intended to make it "ironic" and, thus, "excusable"
"john put up his hipster shield by telling us he's a terrible guitarist before mangling it for the the next half hour" What is the definition of "hipster shield"?