My friends and I did those to cover up a football poster from the 'other' high school. It's just graffiti and you should ignore it.

Just look at it: one of those hands has seven fingers! Every real artist back then knew people had between four and six fingers.





(All seriousness aside, I think it's wonderful. I never thought that people "on the other side" were anything less than as "advanced" as those in Yurp.)