Cheers guys for your replies. The poo sensation has actually faded with time, its more the peeing feeling that annoys still. I am not sure if it is this bladder spasms as the feeling only resides in the end of the penis and later yes, as you say, after drinking a pint or two it is replaced by a genuine need, which when taken seems to cancel out the feeling at the end of the penis.
Normally I don't drink, only really for special occasions etc as what happened during last month, so normally won't have a problem with it but did come up with a solution which was unorthodox but ensured I did not have any more embarrassing moments during the festive season and that was to simply drink two pints before going out. The humorous upside (or down depending your point of view) was that along with home drinks, which I don't normally do and the generosity/sympathy drinks from others I received is that I have never, since my 20's, been so drunk at the end of the night - but my dancing improved!
cheers Paul