What is "skunking"

Usage examples of "skunking".

I mean, this'll blow your mind but I stopped skunking around on Rainey when she got sick.

The Lucky Duck had just finished skunking him at darts-tossing all five shots with his teeth and then punting them into the bullseye, with his own eyes closed-and Tommy had naturally gravitated to the nearest source of laughter to soothe his wounds.