When a phantom person with turd issues, keeps filling the bowl every five minutes and clogging the toilets. You have to employ someone on 'Bog watch' to catch the culprit in action.
1. n. elderly person esp. female, shrivelled in such a way as to suggest that they have been submerged in a bog
2. n. drive-by insult shouted from a moving car at anyone
1. "That shop's owned by a Bogwitch"
2. "Bogwitch!"