Marc Summers might be Kenny's biological father.

Exhibit A: Is that a rubber chicken? Kenny would almost certainly pose for a photograph with a rubber chicken, except in Kenny's photo it would be a stick of butter and he would be eating it instead of yelling at it.

Exhibit B: Speaking of yelling, does Marc Summers have gum in his mouth? Kenny loves gum.

Exhibit C: Marc Summers wrote a book called Everything In Its Place. Kenny loves Radiohead, too. Also, Kenny may not have written a book about his Obsessive Compulsive Disorder, but yesterday we caught him rearranging things in the ashtray.