I'm sure the "no sex is better than same sex" was intended to mean it's better to have no sex at all and be abstinent than be some sinful homosexual.

However, when I first read it I thought to myself "There's no sex better than same sex".

The young lad holding the sign would still be disturbing were that the meaning behind it. The church group leader that painted the signs for the kids before passing them out really should have taken the time to proofread and scan them over before going ahead with em.