I have to agree, I would guess that the interviewer could tell the OP was nervous and was trying to lighten the mood a bit. Though, asking someone to write a la

I have to agree, I would guess that the interviewer could tell the OP was nervous and was trying to lighten the mood a bit. Though, asking someone to write a language they don't use everyday is a pretty horrific thing to do in an interview. I've always been able to interview in my preferred language, even if the company didn't have one line of it in production.