Haha, a friend of mine (a really smart girl, an English major, which makes this even funnier) says lie-berry instead of library also. I take the piss out of her all the time with it. Example:

"Megan, are we going to the lie-berry later?"
"No, FRIEND, I was gonna go to the truth-berry after class. It's a better berry."
"I hate you so much."
"Yeah, it's worth it, though."