The nickname comes from the fact that his dad, Stephan Davids, worked at the Post Office; the endearment comes from the exploits of the hot-stepping Davids on the rugby fields of the world.
Like being named the HSBC Canada Sevens Player of the Final yesterday, where the 24-year-old played an instrumental role in helping the Blitzboks claim a very first tournament win in Vancouver's BC Place.
The scrumhalf/sweeper revelled in his promotion to the starting line-up and had the Canadian crowd on their feet and he not only scored crucial tries and created numerous other, he also made some of the biggest and most valuable try-saving tackles of the weekend – just ask Fijian flyer Aminiasi Tuimaba, who was on the receiving end in the semifinal.
Then there was that trusted left foot, which kicked no less than 17 conversions, more often than not from the tightest of angles.
But “The Post” also moved into the digital age this weekend when the Blitzboks played Wales on Saturday. Early in the match, Davids was surrounded by four defenders and carried around and later used his soccer skills to keep the ball in play in a move that resulted in a South African try.
The tackle and the soccer kick made it to Twitter, with the latter even getting football clubs in South Africa joining in by inviting Davids to training when back home.
For Davids, who was named Player of the Final in Hong Kong just under a year ago, individual accolades mean very little.
To be named Player of the Final twice in 11 outings in the highly competitive HSBC World Rugby Sevens Series is not something to be sniffed at, but for Davids, it was not about him.
"I did not expect to be named Player of the Final, but this award is as much the team's as it is mine,” he said.
“Without them, I would be nothing. We play for each other that is what the team stand for. Remember, when you put that jersey on, it is not about you anymore. It is about the team and those that the jersey represent."
Davids admitted some nerves and emotion as he played in a Cup final for the first time.
“This was my first final, so it was very emotional, but I knew I had my team mates backing me and I had trust in them."
Davids only earned his starting berth this weekend in Vancouver, with Blitzbok coach Neil Powell previously opting for the vastly experienced Branco du Preez to start in the scrumhalf/sweeper position. Powell also had Rosko Specman in that position for the opening two tournaments of the series, so playing opportunities were limited for “The Post”.
"Branco has been a stalwart in the team and I learned so much from him and Rosko as well as Cecil Afrika in the last couple of seasons. Even when Coach Neil said that I was going to start, Branco still supported me. I want to thank both for that support. I am just happy that I took my chance and did justice to the confidence Coach had in me," said Davids.
For Davids, who made his debut in Hong Kong in 2017 when he replaced an injured Specman, the often-spoken about processes and structures in the Blitzboks team makes perfect sense.
"We have a small box, big box system in the team. The big box is the game plan and the structures and processes we follow, the small box is the players and how we express ourselves inside that bigger box. We did that very well this weekend," he explained.
Like Davids, who was part of the young side that claimed bronze in Hong Kong last year, another trip east is eagerly awaited.
"It felt good to win a tournament. I want more."
With “The Post” on such a hot streak, that message might just be delivered come the first weekend in April.