Homeless Guy Smashes Other Homeless Guy Upside Head With Skateboard During Quantum Physics Argument:

A homeless man is on trial in San Mateo County on charges that he smacked a fellow transient in the face with a skateboard as the victim was engaged in a conversation about quantum physics, authorities said Wednesday.

I should have a joke here, but I got nothing.

Thankfully though, Opus3 at by invitation only Stellar Parthenon BBS does have a joke:

Actually, a common occurrence in physics departments, where the people look homeless…

He so owes me a screen wipe.