I'm the only living soul out of a class of, say 90 students, to recognize this man:
Professor: "Does anyone know who this is?"
I was the only to raise a hand.
Me: "It's Levi Strauss."
Professor aghast and pausing slightly: "That's correct. Very good... To be honest I didn't think anyone would know."
Me grinning like an idiot and feeling slightly embarassed at all the heads turning towards me.
Professor: "Tell me, how did you know it was him?"
Me, trying not to come over all sardonic or some other pedantic impression I was giving, said gingerly: "Erm, I recognized his -eh- face."