Konqueror on Big Bang Theory

Years ago I read something about one episode of The Big Bang Thoery showing a t-shirt related to KDE, but I do not remember what, when and who.
Since I’m now watching, in my spare time, the series again, I started searching that image, and I found:
it was a clear mention to Konqueror, the catch-all web browser of the time for the KDE desktop (if I remember right, at that time I was using KDE 4).
Apparently, there is no other great major t-shirt appearing on the show (I searched for Emacs, Firefox, Eclipse, Linux, and so on).

The article Konqueror on Big Bang Theory has been posted by Luca Ferrari on February 10, 2020