1. To kiss someone; to initiate a seduction.
2. To kiss and/or fool around with someone in competition with one's friends to see who can put up the highest numbers or attract the most beautiful people around, as much for sheer entertainment's sake as for personal satisfaction. Occurs most frequently in pubs and bars.
My mate pulled five birds at the pub last night.
The term replaced the now out of fashion term 'snogging' of the 1990s and is now used by most teenagers so that they can have conversations about the night before when their parents are in the room.
Girl 2: "Yeaaah! I pulled Steven after you left."
"Nice one, you pulled! Did you get her number?"
"Nah, she was just a random pull."