To hit, punch, beat, kick, and thrash so hard that people think you're a Japanese fisherman brutally harpooning/ murdering your whale victim.
1. Johnny was waling so hard on Mark yesterday! He had two black eyes!
2. I waled on my boss the other day because he fired me and now my hands smell like sweet victory and gorgon blood.
3. You should wale on that guy for cutting you in the Panda Express line!
It's a name to signify how much potential you may have. Brimming with talent but you aren't showing it.
It can also signify the fact that you have such latent talent and all you need is a small push to make use of your full potential.
Or it is just a way to say, you are a badass.
Me: Hey did you hear.
Friend: Hear what?
Me: The greatestLeague Of Legends player in his age group.
Friend: Yeah seems he even defeated one of the top players of our country in summoner's drift.
Me: He has so much potential he just needs a small push to become the best. He is truly a WalkingArrow.