Two Mormon Missionaries Knock On A Door.

A blind lady answers the door and upon learning who they are tells them she wants nothing to do with God or religion and proceeds to slam the door in their faces but the door just bounces right back open. Furious that they would stick their feet in the door she yells at them to go away and slams the door even harder. Again it bounces back open.

"We'll leave you alone ma'am" says one of the missionaries. "But you might want to let your cat get all the way inside before you slam the door again."