A fork of Rural Dictionary
Someone who tries to be funny all the time. Also he'll try to fit in the group, wich he succeeds most of the time. A "Gijs van Iwaarden" is 9/10 times sarcastic, don't take him too serious. If you do, he will tell you otherwise.
Watch out if you see him outside in the dark though.
Sometimes he is such a Gijs van Iwaarden, he won't stop bregging about himself.