Apparently I am in the same league as I returned a book 21 years later. I was an avid book reader and I used to read tons of books from my hometown public libra

Apparently I am in the same league as I returned a book 21 years later. I was an avid book reader and I used to read tons of books from my hometown public library. Then when I started Uni in another town I was home only in week-ends and I switched to technical books to take from said library. Apparently one of those got lost in my personal books when I moved and stayed at the bottom of a box for those 21 years. Meanwhile I got a wife, kids, you know, life happened. So a few years ago (~2017) we moved again and this time I decided I have too much crap in some boxes and wanted to do a cleanup, therefore I took personally by hand each box in my garage. Lo and behold, at the bottom I recognized this book from the library and when I visited my mother in one of usual monthly visits I also took the book back with me. Funny enough, the same librarian lady was still there as last time I saw her when I was a student, very near to her retirement. I explained the situation and apologized, returned the book and she laughed off. No late fees, though the said library does still had late fees and would've been quite the sum (a little bit more than my monthly salary). The book in question was an electronics catalog dating from middle of 90's, mainly about diodes and thyristors.