Q: Look at your feet. Are you rolling ?
If you answered yes, answer the next question, if your answer was no, skip all other questions and go to end.
Q: Are you wearing shoes ?
If you answered yes, answer the next question, if your answer was no, skip all other questions and go to end
Q: Do you see a skateboard under your feet ?
Move to Answer Section.
A: If you answered yes to all of the above questions, congratulations, you skateboard ! Your penis becomes partially, or even fully erect around attractive women, and likely, will meet their inside skin soon.
A:If you answered answered no to any of the questions, you may be just walking, or worse ... on a pair of rollerblades. I'm sorry to tell your parents that you are officially gay, I'm telling your parents because face it ... deep down you already knew.
EDIT: damn it someone did a similar joke.