The day that the guys with the best meats are born on.
Also no joke there are some geniuses and talents born on this day: Steve Jobs and Alain Prost.
So that's how you tell if a guy has a good meat, ask him his date of birth.
"Whoa, that dudes Birthday is on 24 February, you know he's packing."
"Yeah dude, bro is built differently"