The story goes that a young man given that advice started by asking the young woman if she likes spaghetti. She did not. That was the of the food discussion. Next up was family, so he asked if she had a brother. She answered in the negative. Two down, one to go. His foray into philosophy was "If you did have a brother, would he have like spaghetti?" We don't know what she answered.
The Quora advice includes an F but also some other letters:
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