I would go to Afghanistan to get that really, really good cube cookie thingamajig.
我真的会去阿富汗拿高能量饼干,非常非常赞的方形饼干。
唐顿庄园(音频版)第六季
Don't be silly, you've earned it fair and square, keeping my secrets, hiding that fearful Dutch thingamajig, carrying poor Mr Pamuk down the gallery in the dead of night.
Placeholder names are words that can refer to objects or people whose names are temporarily forgotten, irrelevant, or unknown in the context in which they are being discussed.