And as Sheldon and the other characters have proven time and again over the years, sitcom physicists are generally stressed out and will sporadically show off strange behavior patterns.
It sounds like a joke, but Sean Astin and Kal Penn are playing a pair of brilliant Chicago physicists named Dr. Pemberton and Dr. Campbell, respectively.
In any case, there’s a good chance that Sheldon and Amy will want to shove the visiting doctors under the table.