Lunch hangover
The comatose, exhausted feeling one experiences in their cube an hour after eating a power lunch. The business equivalent of a food coma.
office drone 1: "Hey, you ready to go over that absurdly complicated excel model?"
office drone 2: "Man can we do it later? I've got a massive lunch hangover."
office drone 2: "Man can we do it later? I've got a massive lunch hangover."