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.

