Some examples of them:
1.I know this might be power leveling:powerlevel:, but when I was a little kid my mom and I used to go horseback riding..."
2.Ok, rate me :powerlevel: all you want, but when I was a little kid my mom and I used to go horseback riding..."
3.Sorry to :powerlevel:, but when I was a little kid my mom and I used to go horseback riding..."
4.:powerlevel::powerlevel: I'll gladly take my powerlevel ratings, but when I was a little kid my mom and I used to go horseback riding..."
It was a way for people to circumvent the power leveling rules through some reverse-psychology loophole. And yeah, I can imagine it can become quite annoying for mods to police.