Me and vanessa were supposed to meet at the movies on saturday at 5 but come saturday at 5 i was at the movie theater and she never showed up and never bothered to even let me know she wasn't coming. I guess she's a flaker.
Someone who does not show up when they had previously stated they will. Also, someone who has no intention of showing up, but acts like they will or want to show up only to mess with your feelings.
Simona is a flaker, she said she wanted to catch the game, but she met up with her real friends instead.