I read is as "you're such a hacker that hearing garbage collection makes you think of memory management instead of the much more normal public service"

I had to think about what this question meant for a few seconds, because I forgot that "garbage collection" could ever mean anything other than memory management....

One of my grad student colleagues once asked a faculty member whose specialty was discrete-event simulation what he knew about garbage collection. The prof was taken aback and said, “almost nothing”, until the student clarified that he was asking about simulating waste management pickup.