See - if you'd just ignored him - you'd be blissfully unaware. Just spray once a month with sea water. Everything will rust solid - and wont fall off or loosen.
Dave shamed me into cleaning my bike more than once a year when I retired, I could no longer claim I didn't have time to. And he was right, I found loose and missing bolts I wouldn't have seen otherwise.
Nah, would only be good for your wash if you always let somebody else ride it ahead of you. What a waste! Besides - never heard of anyone following someone to hell and back just for a bath. It is usually the opposite - go like hell to get past and stay in front of the stinky ones in front of you!