The Bumbys then type a personalised narrative that playfully describes how each individual comes across to the public, based solely on their appearance - it is a "fair and honest appraisal", they insist.
Some of Hollywood's most famous stars such as Tina Fay and Aaron Paul have had to duck for cover after finding themselves in their sights.
Instead of snarky takedowns, appraisals by the Bumbys are always warm, and often side-splitting.
During Auckland Cup day on March 11 they promise to have punters in stitches with their wacky take on celebrities.
The duo prefer to remain anonymous and only like to be known as Jill and Gill (not their real names).
"Honestly, our mantra is just sort of positive energy, we feel there's enough negativity in the world," the Bumbys producer and wrangler, a dapper man named Viranda Tantula, said.
"When people hear 'Fair and Honest Appraisal' they assume it's going to be a judgment, and it's not."
A local taste of the Bumbys for ...
Here we asked the Bumbys to run the rule over some of New Zealand's best known names.
Mike Hosking
It's exhausting being the Hugh Grant of morning radio. More like 'mourning radio', you'd quip, it's all such a bore.
You come from the Max Fischer school of broadcasting journalism.
You, turning to a hospital employee: "I like your nurse's uniform, guy."
Those shoulder pads mean never having to say you are sorry. Your lingerie is made of armour.
Overall rating: 9.8.
Hilary Barry
Ten years ago you were ordering tequila shots for all of your friends, now you are calling the shots like a boss.
Confidently understated in your appearance, well travelled, your jewellery rattles as the globe spins on your finger.
Bad behaviour isn't in your vocabulary, and the most tawdry experiences flow towards positive life values, rosy memories and indulgent stories for the office happy hour.
You shine at dinner parties; at restaurants you choose the wine for the table.
You don't even need therapy but you encouragingly suggest it for everyone else. A great look.
Overall rating: 9.3.
Eliza McCartney
Your whole life could be set to Elevate My Mind ( Wanna Go Higher) by the Stereo MCs.
Whether it is wrestling away those Louboutin pointe shoes from Dita Von Teese for the red carpet, or setting the bar high above the glass ceiling, you want to be at the top looking down, like God herself.