When a seeming inanimate and/or stationary piece of sidewalk jumps up and hits an individual leaving a mark remarkably similar to that which would be result of falling on said sidewalk. Almost exclusively happens to heavily inebriated people very early in the morning just after the bars closed. Closely related to the attack coffee table, attack wall, attack bench attack toilet, attack door and attack light post.
Bunny: OMG!!! Bambi, what happened to your face?!?!?!?
Bambi: You won't believe this! Last night after the bars closed I was walking home with that hottie I met, the sidewalk just reared up and whacked me right in the face!!!
Bunny: No WAY!!!! Maybe you were drunk and you just fell.
Bambi: WAY!!!! I wasn't drunk and I didn't fall. I swear it was an attack sidewalk!