Copy Cat

have you ever been in this situation?

Sit.1 Me & Her, watching a TV sitcom
Me: who's that guy? (pointing to one character)
Her: owh, that's Greg, his a policeman.
Me: He's cute, i love the color of his eyes. it's kinda gray mix with blue, unique!

Sit 2. Me, her, my other friend, watching the same TV sitcom
Her: i like Greg the most
other friend: why?
Her: i love his eyes, it's unique, it's like gray mix with blue!
Me: ???

Sit.3 Me, Her in her car
Me: what kind of car is in front of us?
Her: it's the latest Volkswagen Golf
Me: wow, nice! compact and looks strong! i buy it if i have enough money, haha...

Sit.4 Me, her, my other friend, in a cafe
Her: you know what present i asked my parents to buy for my birthday this year?
Me & other friend: what? what? a trip to Bali for three of us? hahaha...
Her: nope! it's a new car! It's the latest VW Golf

..don't ask me why she wanna buy it...

Sit.5
I wrote in my facebook shout out, "nerdy guy is sexy".

Sit.6 Me, her, my other friend, in a cinema
Her: i think i have a crush on Shia LeBoef
my other friend: bah, he looked stupid in this movie...
Her: exactly! he's character is nerdy guy, and i think it's sexy!
Me: ???

can somebody tell me what's copycat is?
it's freaking me out...