Gift from my son

Today I received a gift from my son - it's a tie of HKU. I love it and will wear it next time on TV.
One may wonder how he could buy me a tie when he was still in mother's body.......ok....in fact, his mother (i.e. my beloved wife) bought this on behalf of him. My son did "pay" for this since his mother bought a tie for me would mean she bought one less sweatshirt for him!