The act of going in to hook up with a girl without asking or planning on it. This is usually done at the most oddest of times, and also is very very random. This lasts for about one minute.
Scene: Two friends are in an argument.
Man 1: I hate you!
Man 2: Holy shit! Jim is pulling a brad.
To drive all the way to work to only then realize that you left your work laptop at home and need to drive back and get it; usually performed by people named Brad
Brad: oh shit I forgot my laptop at home again
Everyone: HA! Pulled a Brad!