Sadly, yes, and it gets annoying when you actually do know what what you're talking about and they don't.
Fr'ex: Years ago an ST who wanted Basque characters for a game set in Spain called bullshit when I informed him that my surname is Basque
EDIT: it got really funny when he tried to...
I'm running an Exalted comedy game for Sidereal players who say "Yes" when I ask if their Sidereal really wants to do that while staying in character.
The most recent example was when the guy playing the Endings Sid said "Yes" to confirm his PCs "Raise the Pussiant Sanctum" while the...