No. The C++ mascot is not a diseased rat named Keith (2024) (lunduke.locals.com)

TIL C++ mascot is a diseased rat & embrace this new canon

That's the first time I've even heard about this, and considering the "source" is Uncyclopedia via Lunduke, somehow I'm not surprised. Slow news day?

This is hilarious. Why debunking it?

As a C++ developer, I love this piece of misinformation and will do my best to spread it. Thank you for introducing me (:

Oh no, Keith was the only thing I liked about C++!

That is actually really, really hilarious. Kudos to whoever thought of it!