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dingus, doodad, doohickey, hickey, thingamabob, thingamajig (or thingumajig), thingummy, whatnot, whatsit (also whatsis)
1928, in the meaning defined above
alteration of what you may call it
Resources for whatchamacallit
what are you trying to prove
what did I tell you
what does it matter
what does one know
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It relates to godfathers.
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