Me: I play the guitar.
Idiot: Really? What kind?
Me: What do you mean? Electric?
Idiot: No, what kind?
Me: Like what make?
Idiot: No, what kind? Do you play lead guitar?
Me: Oh, what kind? Yeah, lead, rhythm, everything.
Idiot: Oh. Do you play basic guitar?
Me: Say what?
Idiot: Do. You play. Basic guitar.
Me: Do you mean bass guitar? Yeah, a little.
Idiot: No, basic guitar! Do you play it?
Me: What’s basic guitar?
Idiot: You don’t know? Wow, you must not be very good, then.
To this day I have no idea what he was talking about.
On a similar note, when telling people that I play, they'd ask what chords I knew. I'd look at them incredulously, then say "Um... All of them?" They'd invariably reply "All of them? Yeah, right! He thinks he knows all of them! What a liar!"
Overheard in the office behind me as I was typing this:
“My son is taking sailing lessons.”
“But not today, right?”
“Yeah, even today, in this pouring rain.”
“That’s crazy! There’s no wind when it rains!”