You know you've been hacking too long when

The set-up line for a genre of one-liners told by hackers about themselves. These include the following:

A list of these can be found by searching for this phrase on the web.

[An early version of this entry said “All but one of these have been reliably reported as hacker traits (some of them quite often). Even hackers may have trouble spotting the ringer.” The ringer was balancing one's checkbook in octal, which I made up out of whole cloth. Although more respondents picked that one out as fiction than any of the others, I also received multiple independent reports of its actually happening, most famously to Grace Hopper while she was working with BINAC in 1949. —ESR]