Some of the old timers might remember an "R" rated photo series of Billy doing wash in a front-load (toy) washer... Caused quite the scandal as I recall.
Actually, the "Mr. Clean" name has started to be used on various different products. For years it was just a cleaning solution, now it's scrub pads, car washing systems, and other things.
Plughole = good old British term for the drain in the sink. "Plug" is the rubber stop you put in to stop water from draining, and the plug hole is the drain pipe. Such dodgy phrasing if you think in that way :-D.
OMG that is so weird... as I'm typing right now the Mr Muscle advert has come on TV!!