dump core

verb3

1. •
   To generate a core dump.

   • Traditionally, UNIX and UNIX-like systems have dumped core or provided a binary output of their state upon crashing. — 2007
2. •
   (slang) To ramble pointlessly at length; especially used in apology

   • Sorry, I dumped core on you.
3. •
   (slang) To transfer a large quantity of information or knowledge from one person to another, particularly subjects of a technical nature; to lecture

   • Jack dumped core on how to operate the server before he left on holiday.