Phi­los­o­phy pro­fes­sor: What­ev­er you do guys, you can’t let Descartes come through the back door!
Stu­dents: [Laugh hysterically.]Philosophy pro­fes­sor: It’s not fun­ny! Descartes al­ways tries to come through the back door!

Uni­ver­si­ty of Port­land
Ore­gon

Over­heard by: B Stu­dent