What's the meaning of "collection of unpaid tabs" in Tsukimonogatari episode 3? In episode 3 of Tsukimonogatari, Araragi said "It's not that uncommon for the collection of unpaid tabs to all come at once lately."
I checked another set of subtitles, and found that those gave "Lately, it isn't so strange that a bunch of unpaid tabs come knocking all at once though."

Honestly, I'm confused and not sure "unpaid tabs" means. Is it a joke of some kind or what?
I'd like some help and explanation, thanks.
At a bar, you can put something 'on your tab', which is a way of saying you'll pay it later (usually next time you come to the bar) which when you do pay later, can be known as 'collecting a tab'

What Araragi is saying is that all the things he has been putting off have come back looking for resolution at the same time.