As I was idly working my way through the Wren programming language guide I came across two subtle (OK one subtle, the other more obvious) references to pop music of a bygone era. I'll give a hint, they are both on the "Functions" description page.
Who here comes across a phone number and immediately starts hearing that number in your head as sung in an early 80's hit single?
What other little obscure cultural references have you found in the Wren documentation?