the latch string is always out
old-fashioned You are always welcome to come and visit. Be sure to call around if you're ever in the area—the latch string's always out. I know you've been going through some tough times lately, so if you ever need someone to talk to, I want you to know that the latch string is always out.
latch string is always out
Fig. You are always welcome. Come by anytime. The latch string is always out. No need to call before you come over. For you folks, the latch string is always out.