Pun of the Day I went to the sewage treatment plant and asked if they had any grey poo ponds. 09/25/2025 · The Pun Gents I went to the sewage treatment plant and asked if they had any grey poo ponds. Tagged: commercials, mustard, poo jokes, raw sewage HilariousPretty GoodOKPretty BadTerrible (4 votes, average: 5.00 out of 5)