You can do it if you want. I just have a few people that find it annoying, including myself.
There are several ways I'll take care of it;
1) (and this is my personal favorite) substitute any variation of "hey yo" with "I like anal sex with small furry animals"
2) delete the first line of any post you've ever made.
3) Beg you to occassionally use something besides "hey yo!". It's not the use of "hey yo!" that is annoying. It's the use of "hey yo!" with every single post, image entry, or everything else you do.
Stereotypical as it may seem "hey yo!" forces a false perception in that at this point, I can't help but see you as a tiny white guy with a speech impediment, smoking dope while wearing big baggy pants down around your ankle and your oversized ball cap sideways listening to Rap music.
Having seen your picture, I know this isn't true but this forced perception makes you seem far less intelligent than you actually are.
Wayne