You might have patted yourself on the back, but have you done it with 251 other people?
That's how many Southlanders are needed to break the world record for the most people patting each other on the back.
Sponsor Logan Johnson says today's attempt in Invercargill is to thank the community.
"Everyone down here puts in a lot of effort and hard work, and have been doing a lot of good work in the community," he told Newshub.
Mr Johnson hopes it'll go down in Invercargill history, and he's feeling confident they'll break the record.
"We may even have too many people turn up and have a second attempt to break our own record."
He says 251 people are needed to make history.
Invercargill Mayor Tim Shadbolt told the Southland Times in November he might take part. In 2012 he set his own world record for the longest non-stop interview - 26 hours and four minutes.
Sunday's shot at glory will take place at the South Alive Community Gardens at 1:30pm.