Actually I think I do know. Were they talking about Downton Abbey or something of that nature?
A butler is the head of the household servants, "bally" is a way of saying "bloody" without actually using the word and "tweenies" are young girls employed as the lowest level of servant in a household - assisting the cook and other staff as required.
"No man but a blockhead ever wrote except for money." Samuel Johnson.
One def for "tweeny" is a maid who assists the cook in a British household. I have no idea what a "bally butler" is although I assume whoever he is, he is oversexed.
Originally Posted by Colonel Blink Constructing a baby? Dash it all, I thought that's what the bally butler was for......
The Colonel is obviously playing up to an online persona as a pompous and reactionary British army officer from the first half of the last century. See Colonel Blimp.
Build a man a fire and he's warm for a day. Set a man on fire and he's warm for the rest of his life.