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)
Entering into a raid on pokemon go before an agreed time or as soon as it hatches when knowing more people are coming to do the raid but maybe a few minutes late