I think one of our ducks is a Dude. Since they outgrew their smaller bathing tray we swapped it out for a larger one.
We give them access to the water once a day and they dive in, wash frantically, then THREE of the FOUR get out and start drying themselves. There in the tub of now dirty water is one duck just hanging out. He/she stays there for quite some time, the others are pretty much dry by the time she/he climbs out.
Maybe we'll call this one Dude.