I think he's saying that an ad blocker (adblock is good, ublock is better) blocked 53 ads at a watch site he was visiting. That's a crapload of ads.
I actually never saw it on WUS. Come to think of it I am not even a member on there so I rarely visit. However I did see it years ago on a different forum though
If you were around on WUS 4 or 5 years ago it was all the rage. I'm pretty sure @Joe K. can confirm that the bunny showed up fairly often..... possibly even posted by he himself.
Yea they don't miss an opportunity for some more ad space, I have a feeling the corporate owners look at all the empty space we have here and cry.