“It's been a long time since I've seen Richard Chamberlain [1] on television,” she said. “I didn't recognize him.”
“You didn't recognize a seven foot black man?” he asked.
“Darling,” she said, “you're thinking of Wilt Chamberlain [2]. I'm talking about the actor, Richard Chamberlain.”
“Oh,” he said. “So you didn't recognize a five-five white guy then? Ouch!”
[1] http://en.wikipedia.org/wiki/Richard_Chamberlain