Lynne is at 'Mantha's house and they are both cleaning in their underwear. Lynne asks for confirmation that 'Mantha's cleaning lady has suddenly quit. 'Mantha does confirm this and adds that the cleaning lady may have won the lottery. Lynne asks if the cleaning lady cleaned up, but in a rhetorical way.
'Mantha is in a panic. Her cleaning lady, from out of nowhere, quit her job and there is dust everywhere. She has got no choice but to call Lynne for support. 'Mantha knows what a vacuum cleaner is, she's seen one and she's seen someone use one but she has no idea how to use it herself. Lynne isn't sure either but she has come round armed with a feather duster ready for action.
Lynne and 'Mantha are in their underwear. There is a perfectly rational explanation for this. The vacuum cleaner is a tricky piece of machinery and both Lynne and 'Mantha are completely bemused by it. They have looked all over it and cannot understand how it works. They have turned it upside down and are sticking their fingers in it. Just then, Lynne decides that the three pronged thing should go in the thing in the wall that has three holes. The vacuum cleaner whirrs into action and 'Mantha's long sleeved chiffon dress gets caught and sucked into the machine. Lynne is so shocked that she runs over and knocks into the vacuum cleaner, turning it off. 'Mantha stands up and also knocks the vacuum cleaner, this time turning it on and then sucking Lynne's floaty dress into it. They are both now without dresses but at least they know how the vacuum cleaner turns on.
Of course this is only one explanation. The other is that the cleaning lady also did 'Mantha's laundry. 'Mantha has had a busy week and is clean out (no pun intended) of clothes, so after she hoovers the living room she'll try and work out how to use the washing machine. Lynne has arrived and thinks this is a new fashion as she knows that 'Mantha always keeps up with the latest trends and promptly strips off. Now it's just two fashionable ladies cleaning a house.