Place it immediately after the boast about speaking another language, so the question becomes the reply, then follow it with the Bruh Meme and the Fail Sound Meme when the translation falls apart.
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This short spoken clip, lasting about two and a half seconds, has a voice calling Derek by name before asking, in German, whether he speaks the language. The abrupt switch from English to German makes it feel teasing and awkward, like a challenge dropped into a normal conversation. It comes from the comedy film Step Brothers.