Last year my brother took part, he grew a chopper and half way through the month he trimmed it down to the Freddie mercury (it was horrid!). We turned up to a job together and the customer opened the door with a chopper that followed into his side burns, it was magnificent! We decided not to say anything as the week before my brother had mad a fool out of himself by complimenting a guy on his movember effort and the guy had had no idea what he was on about... Opps. So any way, we finish the job and the kitchen fitter goes in after us. I got a call from him in fits of laughter because the he had mentioned to the customer that we were brothers and that one of us was taking part in movember, to which the customer replied "Oh! they are brothers? I thought they were a couple." It turn out he was taking part as well.
I cant think why my brother took so much convincing to do it this year...