a Filipino slang word for secretly peeking, or slyly touching restricted body parts. It means that you use a "chance" to do the deed. Usually done on a friendly manner that makes it less offensive.
friends hugging
Girl: dude, did you touch my boobs?
Boy: no, must've by accident.
Girl: you're chancing me
Boy: not at all, (he was totally was)
Following related links on websites like Wikipedia or YouTube until you end up on something completely unrelated to what you were initially looking for.