M-1優勝おめでとう！！サンタウロスから素敵なプレゼントだ。使用済みのポキールだよ。

Congratulations on the complete victory in the M-1!! This is a wonderful present from Santaur Claus. It's a used Pokir pinworm test.

[tn]Apparantly a Pokir is a test to be stuck to the anus to check for the presence of worms.