A man said he wanted to finger me

Idk why this is still stuck in my head literally 6 years later but I think about it almost once a week.

When I (19f, at the time) was at work a man approached me at the bar and started flirting with me. He asked how old I was and then told me he had a daughter my age and immediately after he said that he said he would love to finger me behind the bar???

I thought that was so weird that he mentioned his daughter, her age, and then said that to me. As if it wouldn’t have been strange enough on its own.

Why is this conversation cemented in my brain? Can you be traumatized by a conversation?