thing·um·a·jig /ˈθɪŋəməˌʤɪg/
某人;那個叫啥的
thingumajig
n : something whose name is either forgotten or not known [syn:
dohickey, dojigger, doodad, doohickey, gimmick,
hickey, gizmo, gismo, gubbins, thingamabob, thingumabob,
thingmabob, thingamajig, thingmajig, thingummy]