1 definition by slimeybadboys4life

To pull off the most outrageous lie possible to a large group of people, without a single person challenging it (the lie).
Mr Untrustworthy:"lads, I slept with 3 girls last night at the same time"
Lads: "NICE"
Mr untrustworthy (to himself): I just pulled a kilby.

Mr Untrustworthy:"When I was younger I won the junior Tour de France"
Lance Armstrong and co:"Well done, I won the real thing 7 times straight"
Mr untrustworthy (to himself): I just pulled a kilby.
by slimeybadboys4life April 5, 2011
Get the kilby mug.