What is Wilson referring to when he says “I just got wised up to something funny the last two days” on page 132

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The Great Gatsby by F. Scott Fitzgerald
What is Wilson referring to when he says “I just got wised up to something funny the last two days” on page 132
Answer: George Wilson has discovered that his wife, Myrtle, had been cheating on him, although he doesn´t know with whom.
Explanation:
George Wilson is deeply in love with his wife, Myrtle, and idealizes her.
When he finds out about her affair, he becomes devastated, even violent with her. In the provided quote, Wilson is talking to Tom. Ironically, although he discovered Myrtle’s infidelity, he still doesn´t know Tom is the secret lover.