Central Otago hero Shrek was fleeced of 27kg in 2004, a New Zealand record beaten by much less-renowned Mackenzie Country wonder Big Ben's 28.9kg last year. Mr Worsnop gave up in the interests of Shagger's welfare, leaving the farmer dubious of a 40kg record claimed in Australia two months ago.
While everything else had been in established working order, the wool wasn't as big a fleece as he had once thought possible.
A lincoln ram with everything going for it can produce up to 1.3kg of wool a month, but not so for Shagger.
"He's been through two droughts," Mr Worsnop said. "The feller's had a couple of hard seasons."
With a breast cancer fundraising project linked to the show, where Mr Worsnop was in charge of the wool fleece section and which has one of New Zealand's biggest A and P Show sheep divisions, it was time for Shagger to do his bit for charity.
A competition was run to guess the weight of the fleece, which hit 18.8kg on the scales.
It took a bit of skill, as shown by Kena Te Whata, who over-guessed by just one kilogram.
Te Whata was the Golden Shears intermediate shearing champion in 1976, and in Australia has shorn merino rams and wethers which would dwarf the nevertheless substantial Shagger of Tikokino.