Boris spent an entire year chasing a Chia named Charlie. Eventually, he gave Charlie the chance of escaping him by asking him a riddle.
I'm really tired of chasing you, so here is a riddle. If you answer correctly, I won't chase you any longer. Here it is: The day before yesterday, I was 3 years old, and next year I will be 6. You might think I am fibbing but this is actually true out of one day in a year. What day is my birthday?
Boris appeared in Lenny Conundrum #425.