When you're trying to make a conversation with a girl/guy you met recently, either A) online B) via text message or C) in person, and she/he responds to any of your questions with blank stares, one letter text messages using the words: oh, cool, or nice, or nothing at all until you have to try to change the subject.

Ron: so do you have any brothers or sister?
Emily: Yes
~4 minute delay~
Ron: Are you the oldest?
Emily: No
~2 minute delay~
Ron: So how was your day?
~2 minute delay~
Emily: Ok
Ron: Are you conversation walling me on purpose?
Emily: What?
Ron: I think I'd have a better conversation with a brick wall.