how to tell if you need colonic irrigation
I bet you've always wanted to know this haven't you! Well, according to my sources you have to do the following two simple things:

1. Eat sweetcorn
2. Monitor your stools

If, after 24 hours, the corn has not reappeared you need to book yourself in for an internal drainpiping. Now, on hearing this my American friend K told me the following... (are you sitting comfortably? Then I'll begin.) She and P were on a long car journey. They stopped off at a Dunkin Donuts or similar to use the facilities. While she was in the cubicle she heard the woman in the cubicle next door say: "Corn? When did I eat corn?"