How to sneak over the boarder

First, get in line with everyone else. Then when the agent in the booth is busy, get on all fours and crawl to front of the line. Make sure to stay really low, so that the agent doesnt see you. Then wait, wait, wait, until both the agent in the booth and the ´safety´ agent are busy. Quickly standup and you´re in.

This is exactly what i witnessed today at the border crossing in spain. Needless to say, when i saw the guy on the other side he gave me a big hug.