Fact buddy
A fact buddy is the person who thinks they're a genius just because they know one random thing. You laugh at their nonsense, but you also know they’ll save your life with a fact when you least expect it.
My fact buddy said, 'Did you know the Eiffel Tower is made of cheese?' I said, 'No, but I believe you.'
He DMed me about the 14th Amendment at 11 PM on a Friday. I cried.
He told me the exact number of beans in a can of baked beans. I hung up.