Ocean Spittle

"This is a pair of shoes worn by someone who was on the Titanic!"
"Oh! Were they wearing these shoes when it sank?"
"No."
"OK. Well, Did they have these shoes on board the Titanic with them?"
"No."
"OK. Well, then, did this person own these shoes already when they went on the Titanic--"
"--No."
"--& they just left them at home?"
"No. After they got home from sinking on the Titanic, then they bought these shoes."
"Oh. So they bought 'em right after they got home?"
"No. They went home, and then they bought these shoes some time later. But they never went home. Or maybe they did. Anyway, it didn't mean anything one way or the other, so don't worry."
"Stop talking to me. It's all for nothing. I don't look at shoes."

And there you have it. Just don't look at shoes.
Unless they were already owned by someone involved in a famous maritime disaster at the time the ship went down.