This is the 14743rd most frequent Russian word.
писец
"Scribe" or "Arctic fox," depending on context.
Here, 'писец' is used colloquially to emphasize extremity or intensity, roughly translating to 'extremely' or 'super'.
Ты видел это? Писец холодно на улице.
Did you see that? It's extremely cold outside.
In this sentence, 'писец' refers to the Arctic fox, an actual animal.
В тайге можно встретить настоящего писца.
You can encounter a real Arctic fox in the taiga.
Here, 'писец' is used idiomatically to refer to a dire or catastrophic situation, often with a humorous or dramatic undertone.