Photobooth privacy

Ok so I take really silly pictures with photo booth
and every time I open in front of people to take an important picture I'm always really embarrassed because my silly pictures show at the bottom!
Do I have to take those pictures out of the Photo booth folder?
Is there any way to have them not show?
There is no preferences (command comma) option for photobooth so I don't know how to hide my pictures when I open photobooth...

you can just store the pictures somewhere on your hard drive when you're done fooling around, and then delete them form photo booth, just drag them out to a folder or something