can't see a hole in a ladder
1. Is stupid or dimwitted. Don't give Randy that important project—he can't see a hole in a ladder! Please, like I'm entrusting this important file to someone like Jeff, who can't see a hole in a ladder! No, I'm leaving it with Denise. Judging by his ridiculous question, that guy can't see a hole in a ladder.
2. Is drunk. Don't buy him any more drinks—he already can't see a hole in a ladder. Hey, if you can't see a hole in a ladder, you're not driving—I'll give you a ride home. A: "Man, Matt can't see a hole in a ladder at this point." B: "Lay off, it's his bachelor party. Let him have a good time."
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