To disappoint a workmate

A collegue was chatting with me yesterday about his lack of female companionship. He then looked at me and said "So could I have your sister's phone number?"

"Sister? I don't ... hang on - who are you talking about?"

"You came in one night with your sister and another person."

"You mean two people, both red-headed, one very tall with long red and blue hair and the other about my height, also with long hair?"

"Yeah, then. The one that was your height - she's your sister, isn't she?"

Gentle reader, I then had to explain to the poor guy that a) I have no sister and b) the other person I was with was my very beloved lederhosen, who was on that night wearing his full dinner suit.

My co-worker can't look me in the eye now.