"I just thought it was quite funny, seeing reports and what's happening in Australia, and seeing all thing bad things that happened, we thought it would be nice for people who walked by to see something nice and light-hearted.
"We thought it was a light-hearted moment in terms of all the tragedy going around.
When asked if the cafe backed the actions of Egg Boy, Tiller said: "What the senator said was disgusting. We thought egg boy was brave and that the senator deserved to be egged."
Another Trax Bar & Cafe manager, Briar Lee, said a general manager would usually write a funny message on the sign every day.
"We put things up all the time, but not usually about things that have been reported on," she said.
Tiller and Lee both said the sign has had a lot of praise from customers and social media.
"We have had heartwarming moments where immigrants have come in and said that it's so nice to see support from all over New Zealand," Tiller said.
Lee revealed that students from Victoria University posted a photo of the sign on Facebook.
"We have had lots of praise, we have had a lot of people sharing it on Facebook," Lee said.
The post on Vic Deals has more than 3000 reactions and 145 shares.