Halloween 2008. Construction time: 90 minutes. Primary ingredient: Frog tape. Weird bulges: A bicycling jacket under a thrift-store t-shirt.
Notes for anybody else trying this costume: I tried taping the upper velcro anchors (closer to shoulders) above my elbow for fear that the tape would try to fall down my arm the whole night. This was silly and cost me articulation of the arms. It's fun being a college graduate.