"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.