How to really upset Dyson...
Refer to them as "hoovers", as several people have above ;-)
Reminds me of the time I was tempted to slap some kids over the head in town and exclaim "Doh!" at the same time. They were taking the piss out of their teacher "Mrs Dyson", joking "I wonder if she invented the hoover"...
Biting the hand that feeds IT
