Why does Stark call Loki reindeer games?

Why does Stark call Loki reindeer games? Since the term has become a colloquial saying for bullying, Stark may have called Loki “Reindeer Games” because he was caught bullying some citizens on the streets of Germany.

Since the term has become a colloquial saying for bullying, Stark may have called Loki “Reindeer Games” because he was caught bullying some citizens on the streets of Germany.
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