[11th Earl of Mar]

Short, portly, bald men cannot be 'a working stiff' who lives in 'harsh conditions' or live an ascetic lifestyle which includes a lot of walking?

I would bet that there were a lot of short, portly, bald working stiffs in that day.

Whether Jesus was one, or not, will be a secret until eternity.

[Destro]

No it will not be. Working men were not fat back then unlike our working stiffs of today who would probably shock our half starving ancient ancestors with their girth.