Someone who has the combined qualities of both a puff and a retard.
Plebfield skipped through the meadow with an heir campness, glee and cumbersomeness, mincing his way over to his favourite blossom tree whilst taking care not to tumble due to his oafness and lack of coordination.
Rupert: Oh look Quentin, it's Plebfield! I wonder where he's going?
Quentin: I dunno, but by gosh, just look at him run! What a pufftard!